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SRAM Goes Full Gravel with RED XPLR 13 Speed Groupset 

SRAM-RED-XPLR-Groupset
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After SRAM chummed the water with some not-so-secret spy shots of the unreleased 13-speed SRAM RED XPLR groupset, most of the gravel world sat waiting, cash in hand. Well, it’s finally out, with details and some bonus products that will make your head spin — so let’s get to it!  

SRAM-RED-XPLR-cassette-close-up
(All Photos: Jordan Villella/Bikerumor)

What is SRAM RED XPLR? 

The latest release follows the new SRAM RED groupset. The updated group improves many small details but dramatically improves braking and lever feel. SRAM decided to make this jump while everything fell into place. The SRAM Transmission mountain bike group used the UDH to create a bombproof rear derailleur, and the existing XLPR line drifted into gravel territory. 

A proper mixture of mountain and road from the SRAM groupset universe formed.  So why not? 

SRAM-RED-XPLR-casette-installed-

Why 13 Speeds? 

The first question that comes to mind with “new or more gears” is, “is this a new standard?” However, the new RED XPLR group set uses the same XDR driver body as the 12-speed group sets and the same chain, so there is no new standard. 

SRAM-RED-XPLR-cassette-13-speed

How? The unique cassette angles over the spokes and doesn’t take up any more space on the cassette body.

New Chain? Sort of—but no. This is the same flattop 12-speed chain you’ll find on the new SRAM RED but with some extra bling.

SRAM-RED-XPLR-rear-installed--scaled.

SRAM RED XPLR Derailleur 

If you’re familiar with the SRAM Transmission mountain bike groupset, the new RED XPLR derailleur won’t surprise you. However, there are some very cool gravel—and drop bar-specific additions. 

What’s the “same”? There is a lot of carry over from the Transmission world including the same AXS batteries, the same Magic wheel (genius), zero limit screws, and of course, a UDH mount. Maintenance, installation, and troubleshooting are precisely the same as the transmission line, and the same goes for chain sizing using the SRAM chain length calculator. 

How about interchangeable parts with Transmission? The pulley set from the Transmission derailleurs and the GX Transmission rear derailleur battery latch are interchangeable with the RED XPLR AXS rear derailleur. SRAM states that these are the only parts of the derailleurs that can be used interchangeably. 

SRAM-RED-XPLR-Installed-Magic-wheel

The XPLR line is specific to the length of the cage and some bits to lighten up the derailleur to be worthy of the SRAM RED naming convention. The entire derailleur is rebuildable, and parts are all replaceable except for the front, where “RED” is engraved. 

The new design will only work with the SRAM 10-46T XPLR 13-speed cassette and road Flattop chains. 

SRAM-RED-XPLR-Installed

SRAM XPLR Cassette

The cassette is the most excellent stand-alone piece of the SRAM RED XPLR groupset. It reminds me of the first power-dome RED cassettes, which were a work of art and loud, haha. 

The XPLR cassette, however, draws on years of product knowledge and delivers a good look and functional design. The cassette mimics the Transmission design with a block of road/gravel gears. 

SRAM-RED-XPLR-crankset-assemply

It offers a 460% range, and if paired with the right front ring, you should be able to climb anything. Like the transmission groupset, the cassette shifts the best under load and force. Something that is usually a no-no, given the torque produced in the lower gears. This (like Transmission) makes the groupset a real option for e-bike and e-gravel riders, shifting under load constantly. 

The gearing jumps are tight for the four highest gears, then skip a tooth for the next three, and get further spaced out as you travel up the cassette. 

SRAM XPLR cassette tooth count: 10,11,12,13,15,17,19,21,24,28,32,38 and finally 46T

SRAM-RED-XPLR-Installed-crankset-

SRAM XPLR Crankset and Powermeter 

Unlike Shimano, SRAM went all-in with power and redesigned chainrings for their RED XPLR crankset. Like the transmission mountain bike crankset, the crankset uses a thread-on chainring available in many gravel-specific sizes (38T-46T). 

For those looking to harness the power, the new SRAM RED XPLR crankset with power boasts dual side power capture, 200 hours of battery life with a replaceable coin cell battery, and IPX7 waterproof protection. Perfect for those creek crossings; don’t stay under water longer than 30 minutes. 

SRAM-RED-XPLR-Installed-details

The crankset itself is a SRAM RED design (the same as the latest release), available with or without a power meter. Those not power-hungry can opt for the direct-mount single chainrings, available in the exact 38T-46T sizing. 

SRAM-RED-XPLR-Installed-lever-shape--scaled

SRAM RED XPLR Shifters / Brakes 

Some items, including the shifters and brakes, are carried over from the SRAM RED launch. Yes, the shifters now go up to 13 points on the cassette, but the brake lever and caliper are the same. 

It seems like more cross-over. What’s backward compatible? The SRAM RED XPLR AXS will work with prior generations. It is also compatible with all AXS controls, all road Flattop chains, and all wide 1x crank arms. However, because the 13-speed Full Mount rear derailleur is optimized to work with the RED XPLR XG-1391 cassette, those drivetrain parts are not backward compatible. 

SRAM-RED-XPLR-Installed-button

I wanted to touch on the shifter and brake setup quickly. The design is more than refined; it is a complete overhaul. The lever pull has an ease I’ve never felt in SRAM road brakes. The caliper body looks more like a CNC machined one-off than a forged or cast production piece.

SRAM-RED-XPLR-Installed-brake--scaled.

I didn’t cover the RED road launch, so this was new to me when I experienced it with the RED XLPR gear – this was a serious brake performance update. 

SRAM-RED-XPLR-full-group

SRAM RED XPLR Pricing

  • XPLR Rear Derailleur:USD: $700.00, EUR: €630.00, GBP: £540.00
  • Red E1 Flattop Chain: USD: $99.00, EUR: €89.00, GBP: £76.00
  • Red XPLR Cassette: USD: $600.00, EUR: €585.00, GBP: £500.00
  • Red XPLR Crankset (non-power): USD: $650.00 (chainring included), EUR: €585.00, GBP: £500.00
  • Red XPLR Crankset Power (chainring included):, USD: $1,100.00, EUR: €990.00, GBP: £850.00
  • Separate Chainrings:USD: $150.00, EUR: €135.00, GBP: £115.00
  • Paceline X Rotor: USD: $70.00, EUR: €63.00, GBP: £54.00
  • SRAM RED Shifter/Brake lever: USD: $675.00, EUR: €608.00, GBP: £520.00

SRAM RED XPLR Weights 

  • SRAM XPLR Derailleur: 375g
  • SRAM XPLR cassette: 289g
  • SRAM XPLR Rotor: 132g (no lock ring)
  • SRAM Dub BB T47: 87g
  • SRAM RED Chain: 250g
  • SRAM XPLR Crankset 40T Power: 514g
  • SRAM RED Brake/Shift Lever (with hose and caliper): 370g
SRAM-RED-XPLR-full-bike

First Impressions: SRAM RED XPLR Review

I was pumped when SRAM let the cat out of the bag. They were making a gravel-specific groupset. I knew the new groupset had better braking performance, and they are dedicated to the 1x drive train; it could be fantastic. 

Spyshots revealed a lovely mix of the Transmission mountain bike design and the new iteration of RED… but with an extra gear. After learning the new groupset required no new standard or chain, I was extra curious. 

SRAM-RED-XPLR

Install and Build

When the groupset arrived, I followed the SRAM instructions to the “T” and was pleasantly surprised to have an uneventful time with the assembly. Most review bikes come fully assembled, and we dial them in, but rarely do I build a frame from the bottom up, especially with new gear. But the instructions were spot on, the brakes were very easy to set up/bleed, and the chain sizing was foolproof. I used the new Park Tool 13 spd chain tool, and though the chain is still a “12-speed” design, it worked excellently. 

The RED XPLR uses the same setup as Transmission MTB; the setup cog is highlighted with an orange band (the grey ones are to deaden the sound of the cassette). You size the chain with the rear derailleur in setup mode (a click between fully open and engaged to ride). Pull the body tight so the chain is engaged, and tighten the UDH fixing bolt to torque, allowing the two lines on the hanger to meet up. 

SRAM-RED-XPLR-Installed-side-lever

Ride Ready

After the installation, I was eager to get on the road, so I slapped on some wheels (the Zipp 303 XPLR wheels were still in the mail). The first thing I noticed was the braking performance. I’ve ridden the previous RED groupset for a while. Every iteration gets slightly better from the first RED hydro brake, but not “wow” better.

SRAM-RED-XPLR-Installed-rider-view-

This version is WOW better and perfectly fits the style of gravel riding.  One-finger braking is easy, and the lever feels smooth and fluid. The lever body melts in your hand and allows for a full hand on the lever. Plus – there is a bonus button, one that’s easily programable and tactile.

SRAM-RED-XPLR-Installed-rotor--scaled.

Shifting Speed

The shifting is quicker than the Transmission MTB (or it feels that way) and very smooth. The cassette jumps, and a 40T front ring seem spot-on for my riding style. The higher end of the cluster is tightly spaced and allows for a cadence dial-in and metered effort. As you travel up the cassette, the jumps are more significant until you reach the “save me” 46T cog. 

Like the Transmission MTB groupsets, the RED XPLR group shifts exceptionally well under load. You can shift quickly when chugging along on chunky gravel, spinning a slow cadence. The same goes for climbing and shifting to a higher gear for an all-out attack. It lacks that “ca-chunk” shifting sound and feels more like a slightly increased pressure on the pedals. 

SRAM-RED-XPLR-Installed-UDH

Chain Retention

Chain retention is well managed, and I didn’t drop a chain during my test periods—believe me, I tried. The slightly smaller cage of the RED XPLR derailleur holds the chain nicely without affecting the feel while pedaling. I attribute this to the chain sizing tool as well. 

SRAM-RED-XPLR-crankset-ring-removal-

The crankset is a nice mix of road and MTB. The spin-on chainring is very dialed and something I liked from the Transmission XX SL cranksets. It does require a specific tool to remove the ring (above), and it is available separately if you’re like me and like to swap rings constantly like a track racer.

SRAM-RED-XPLR-Installed-levers

So Far, So Good

I’m reserving my full thoughts for a longer (months) review period, but I’m very impressed so far. Yes, it’s a RED groupset, so it’s pricy, but the performance is fantastic, and the progress should (hopefully) hit the FORCE and APEX groups. However, the cassette will be tough to get down in price from $600 to something more palatable to the public. 

As of right now, I’m very happy with the SRAM RED XPLR groupset. The performance in shifting, braking, and overall ease of use is top-notch. Look for a full review as we put the RED XPLR group through the paces and even some cyclocross racing early in the fall. 

SRAM.com

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62 Comments
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John
John
4 months ago

I wonder how long it will take to flow down to Apex and Force…

Veganpotter
Veganpotter
4 months ago
Reply to  John

Apex got a recent update to 12sp. My guess is that it’ll stay 12sp for a good 5yrs(Apex doesn’t get updated as frequentlyas the rest). But Rival and Force 13sp will probably be out in 6-8 months

Andrew
Andrew
4 months ago
Reply to  John

I wonder how long it will take for Apex and Force to double in price.

Veganpotter
Veganpotter
4 months ago
Reply to  Andrew

Alex barely went up in price. When Force went to 12sp, it also barely went up if you didn’t get a power meter

Jaio
Jaio
4 months ago
Reply to  John

Yeah, when it gets down to half the price it’ll be good.

Oh hold on.. er no it’ll still be a mental price for gears and brakes.

Veganpotter
Veganpotter
4 months ago
Reply to  Jaio

If you want it to be free, find some scrap metal and make your own groupo

Jaio
Jaio
4 months ago
Reply to  Veganpotter

Great idea bro!

Or I’ll buy gears and brakes for $500 like any other rider who wears through stuff.

Veganpotter
Veganpotter
4 months ago
Reply to  Jaio

I have a Red groupo I put over 70k miles on. I replaced the ratchet with a 12sp ratchet from Ratio Technology and I’ll put tens of thousands of miles on it before I get a 13sp ratchet for it.

nooner
nooner
4 months ago

Yawnn.. I’m holding out for 14 speeds… Seriously I’m happy with Shimano 11 speed. Simple, works great,easy to keep in adjustment, cost effective, and no $600 dollar cassettes to wear out @Jordan, good preview, and is SRAM still using that deadly, cancer causing (just look at the MSDS safety sheet, yikes!) DOT fluid in these brakes?

Mr. E
Mr. E
4 months ago
Reply to  nooner

Made me curious.
MSDS for Mineral Oil and DOT both list “No data/Not Classified” for Carcinogenicity

MSDS.jpg
David
David
3 months ago
Reply to  Mr. E

FYI Mineral Oil is more harmful than DOT 5.1
STS Data from Maxima website which SRAM uses.

Mineral Oil
GHS Classification

  • Aspiration Hazard Category 1 Acute
  • Inhalation Toxicant Category 4

Hazard Statements

  • H304 May be fatal if swallowed and enters airways.
  • H332 Harmful if inhaled. 

https://cdn.shopify.com/s/files/1/0555/2957/0594/files/Mineral_Brake_Oil_SDS_GHS.pdf?v=1675871564

Dot 5.1
GHS Classification

  • Toxic to Reproduction Category 2

Hazard Statements

  • H361 Suspected of damaging fertility or the unborn child.

https://cdn.shopify.com/s/files/1/0555/2957/0594/files/DOT_5.1_Brake_Fluid_SDS.pdf?v=1675867939

Joe
Joe
3 months ago
Reply to  David

How do you read those sheets and come to the conclusion Dot is less harmful than Mineral Oil. Your list clearly shows that Dot causes cancer and harms human reproduction. :face palm:

Andrew
Andrew
4 months ago
Reply to  nooner

Have a friend who still runs 9 speed. I get the need for smooth cadence on the road with extra gears, but I struggle to notice the difference on undulating gravel and singletrack.

Tom Wenzel
4 months ago
Reply to  Andrew

I don’t need to struggle to notice. Everyone’s different, right?

My cheapskate neighbor claims his Toyota Camry drives the same as my Porsche 911 GT3. Yea, okay buddy, do whatever reality gymnastics you need to do to keep it real.

ricky
ricky
4 months ago
Reply to  Tom Wenzel

The comparison between a Toyota Camry and a Porsche 911 and the difference between 9-speed and 12-speed bicycles is a clear exaggeration. The gap between those cars is immense—one is a masterclass in engineering, built for speed, precision, and performance, while the other is a dependable, everyday sedan. Their differences aren’t just noticeable—they’re worlds apart in every aspect of driving experience.
On the other hand, the transition from old groupsets to current groupsets, while offering some benefits, is nowhere near as dramatic. Yes, 12-speed drivetrains provide a bit more range and smoother shifting, but the difference is incremental, not revolutionary. The heart of cycling performance lies not in the gear range but in the rider. A strong, skilled cyclist on a 9-speed bike can easily outperform an average rider on a 12-speed.
The real game-changer in cycling isn’t an extra few gears—it’s the rider’s strength, endurance, and technique. Pretending that the difference between a 9-speed and a 12-speed is akin to the leap from a Camry to a Porsche 911 overstates the impact of the technology and underestimates the true essence of cycling. It’s the rider who makes the bike fly, not the groupset.

Veganpotter
Veganpotter
3 months ago
Reply to  ricky

Nobody thinks adding a cog is gonna turn you into superman. That said, people have a preferred cadence window and a lot of people don’t do terribly well on the margins of that when it comes to fatigue. I know my 10sp grocery getter feels like total doodoo after I’ve been on 12sp, 9sp would be significantly worse. 11sp is slightly annoying but still feel pretty terrible after spending significant time on 13sp once I get it.

Dinger
Dinger
4 months ago
Reply to  nooner

Re: DOT Brake fluid – don’t drink it. Do look up the differences between DOT and mineral oils for brake fluid use. There are very good reasons to choose DOT over Mineral for braking performance and safety.

Tom Wenzel
4 months ago
Reply to  Dinger

Please tell that to my perfectly functioning for 2 years Shimano M9100 and M9120 brake sets.

Reed
Reed
4 months ago

2×13? I wouldn’t buy a gravel bike without a front derailleur. I wish I could put one on my trail bike too. The gear range of 1x just isn’t enough.

Bikerumor should hire Peter Hilby
Bikerumor should hire Peter Hilby
4 months ago
Reply to  Reed

2×11-46 grx 12 speed di2 forever

Veganpotter
Veganpotter
4 months ago
Reply to  Reed

I’m guessing 2×13 will be out fairly soon. I’m sure Ratio Technology will have a 13sp ratchet out in no time. They’ll probably need to make a different derailleur cage to work with it though. But there are also already people running 2×13 with SRAM shifters, an aftermarket ratchet, and the 9-36 Ekar cassette. I’d possibly do that on my road bike with a 13sp 10-40 but I don’t want that 9t cog on my road bike.

Jaio
Jaio
4 months ago
Reply to  Reed

Same here. Gravel bikes for me need to be good road bikes as well as off-road capable. Doubles just work and give me range and smaller gearing gaps. Mind you, I’m just not the customer for groupsets that cost thousands anyway. It’s all irrelevant to me.

seraph
4 months ago
Reply to  Jaio

I ride 1X on road. You should try it, it’s a blast.

nooner
nooner
4 months ago
Reply to  seraph

Where do you live bro? Nebraska? or Belgium? Pancake flat… have a good life…LOL

Jaio
Jaio
4 months ago
Reply to  seraph

I have tried it, a number of times. Personally I think it sucks which is why I’m using 2x thanks.

Bikerumor should hire Peter Hilby
Bikerumor should hire Peter Hilby
4 months ago
Reply to  seraph

Dude, perfect knees, not us all has. You also can’t drive a stick on a car or a bike.

Bikerumor should hire Peter Hilby
Bikerumor should hire Peter Hilby
4 months ago

JK i really want this job, but for real. Shift BEFORE, the hill it’s easy if you time it right.
You ride bikes?

Greg
Greg
4 months ago

One tooth jumps seem unnecessary for gravel. I’d rather have two tooth jumps and then a more even spread from the middle through the large cogs.

Dinger
Dinger
4 months ago
Reply to  Greg

I find two-teeth jumps get more an more bothersome the smaller the cogs are, starting at the 17-15T jump.

Mario Meggiolan
4 months ago

oly one cassette?

Veganpotter
Veganpotter
4 months ago

It won’t be long before they make a 10-52 since a lot of people run that on their 12sp gravel bikes

seraph
4 months ago
Reply to  Veganpotter

They do make a 10-52, in their Transmission line. You can run a Transmission derailleur, cassette, and chain with a road or XPLR front chainring already.

Jack
Jack
4 months ago
Reply to  seraph

Notin 13 speed

Veganpotter
Veganpotter
4 months ago
Reply to  seraph

Try using that with this 13sp shifter and rear derailleur without a B screw

blue
blue
4 months ago

Somehow… not impressed.

Tom Wenzel
4 months ago
Reply to  blue

I rode the T-Type Transmission on a mountain bike and I was able to write a novel in between the times it took to shift.

Shimano, your move if you’re still awake. Even their last GRX update bored me to tears; I see a bunch of Japanese executives in 1990s conservative suits making decisions as if the yen was still in freefall.

mud
mud
4 months ago

I love the whole Transmission tech, but more brands have to adopt the UDH, especially the steel/ti brands (I’m thinking of my Ritchey).

Balderdash
Balderdash
4 months ago

Pretty weak that this is only compatible with SRAM’s dumb “universal” derailleur hanger standard, otherwise I’d buy it for my bikepacking bike. Oh well.

Dockboy
Dockboy
4 months ago
Reply to  Balderdash

What’s dumb about it? It means the widest availability of any hanger, whether for Shimano Direct Mount or traditional derailleurs, and it allows this precise system to work.

Balderdash
Balderdash
4 months ago
Reply to  Dockboy

I suspect that using the standard derailleur mount would have even wider compatibility. Considering that the spacing is at least similar (if not the same) to 12 speed, the added precision is not needed (Source: the flawless shifting on both my AXS and Di2 12 speed bikes with standard derailleur hangers).

Veganpotter
Veganpotter
4 months ago
Reply to  Dockboy

It wasn’t long ago that every derailleur worked with every derailleur hanger. I totally get the push to the UDH though. But for compatability, it’s definitely not ideal. Without it(outside of dropout width and thru axles), you could run this in a road bike from the 60s, or the cheapest of Walmart bikes because the derailleurs would simply thread into any hanger made

Jaio
Jaio
4 months ago
Reply to  Balderdash

Some crazy expensive and complex kit for a bikepacking bike? A bike that goes in boxes in planes and gets used in conditions where servicing and support are either a few days away or needing it disrupts a trip? Nah, tis is the polar opposite of bikepacking and touring bike gear imho.

Balderdash
Balderdash
4 months ago
Reply to  Jaio

The bike currently has a 1×12 AXS drivechain. It has performed flawlessly over many miles and through harsh conditions, I have no reason to believe that it would become unsuitable for my purposes if an extra gear were added.

Jaio
Jaio
4 months ago
Reply to  Balderdash

That’s cool, if it works for you all good. Wouldn’t be my pick for my BP bike but it’d be dull if we all rode the same stuff.

Balderdash
Balderdash
4 months ago
Reply to  Jaio

Most people underestimate how stout new electric drivechains are. I bet 99% of people who think they ride too hard for AXS or Di2 would be very surprised if they actually tried it.

Veganpotter
Veganpotter
4 months ago

I’m looking forward to Ratio Technology making a 13t ratchet to run on older shifters now that they know how it’ll be spaced. E*thirteen will definitely be making cassettes too which I’ll also be buying! Thanks SRAM, even though I won’t actually be buying any SRAM 13sp parts to run 13sp on my old SRAM shifters!!!

Slimchances
Slimchances
4 months ago

Putting aside the whole 1x vs 2x debate, why in the world would I use 10/46 SRAM 13 speed when a Shimano GRX12 speed10/51 offers greater range? For the record, I use a 2×11 with an E13 9/39 or 9/42 and have greater range than either. And bonus – no need to pull the crank to change chain rings.

seraph
4 months ago
Reply to  Slimchances

Because 1x will always be better than 2x. Simpler, cleaner, lighter.

nooner
nooner
4 months ago

Team SCRAMER is down voting everybody! it’s too funny, and too obvious. Results were 180 degrees opposite when things were organic before SCRAM started seeing RED, LOL.

Deputy Dawg
Deputy Dawg
4 months ago

Not a fan of the big 1-2 jump. I’m probably in the minority, but I don’t want it to be a “save me” gear as named above. I just want another reasonable step.

WearsMyBike
WearsMyBike
4 months ago

So how many years behind is Shimano now?

seraph
4 months ago
Reply to  WearsMyBike

They’re usually about 6 years behind on average. But that number also looks to be growing.

rino
rino
4 months ago
Reply to  WearsMyBike

if you actually ride, you’ll discover that they’re ahead. enjoy your $600 cassette and batteries

Veganpotter
Veganpotter
4 months ago
Reply to  rino

You do realize that Dura Ace makes expensive cassettes too don’t you? Then they eventually make 105 cassettes that are compatible. The same will be true with Sram and the Rival 13sp cassette that will inevitably come

seraph
4 months ago

I love everything about the new group except the regular Red XPLR 1x crankset which they gloss over. MSRP is $650, which is an insane number for a single ring carbon crank. Sure it’s probably lighter than Force AXS D1, but Force has an MSRP of $275.

Cryogenii
Cryogenii
4 months ago

Hmmm, this work with a GX AXS shifter? I guess the shifter just sends a “higher” or “lower” command and the derailleur figures it out? Coz I’m an odd ball and whilst all the other mountain bikers are going for 10-52, that 10-46 over a hella narrow set of jumps has got my notice.

D.J. Brew
D.J. Brew
4 months ago

$600 for a cassette?!?! Will it last forever?!

Charlie
Charlie
4 months ago
Reply to  D.J. Brew

A status symbol and a component, why sram you’re spoiling us

Fitness
Fitness
4 months ago
Reply to  D.J. Brew

Wax is your friend

dave
dave
3 months ago

The more I learn about SRAM RED, the more I’m liking Campy Ekar.

Fred
Fred
3 months ago
Reply to  dave

You can join the 7 other people who buy Ekar

rYgUY
rYgUY
3 months ago

I built a new Force 2x (with RED rotors, casette and chain) for my all-road bike and the gearing steps are outstanding compared to 1X12 for a performace rider in variable mountain terrain and fast flats. 1X13 will be closer, but this RED and the 2X Force will be about the same weight – you decide… My Force/Red build saved me enough for an extra carbon wheelset (Nobl wheels – sensational) for those days you want 650Bx52mm on singletrack over your 700×38.

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