Muc-Off L.O.P.S. 2.0 oversized derailleur pulleys debut, Shimano 11-speed only

If you’re still rockin’ a Shimano Dura-Ace 11-speed group, you’re in luck. Not only does Muc-Off say those 11-speed chains are 36.6% faster than the new 12-speed chains, but their new oversized derailleur pulleys make them even faster.

Formerly available only for their pro teams (EF Education Easypost, INEOS Grenadiers, and Elite IRONMAN triathletes Laura Philipp and Kat Matthews), they’ve made a limited batch of the L.O.P.S. 2.0 (Lightweight Oversized Precision Shifting) upgrades available for purchase.

muc-off lops 2.0 oversized derailleur pulley

More than just reducing friction with a ceramic bearing upgrade, Muc-Off tweaked the angles to reduce articulation and friction, further optimizing the chain’s path.

It’s designed, developed and built in the UK specifically for the Dura-Ace RD9100 and 9150 Di2 rear derailleurs. The 13-tooth upper and 19-tooth lower pulleys are machined from aerospace-grade aluminum, then coated with a friction-reducing finish that they say has 88% less friction than standard alloy and 71% less than hard-anodized metal.

The frame is a mix of carbon fiber inner plate with additive 6/4 titanium outer plate, making it both light and a claimed 62% stiffer than the stock Shimano cage.

drag reduction data chart for muc-off lops 2.0 oversized derailleur pulley

Their own in-house testing, which uses a complete drivetrain for the most realistic results, used multiple cassette ratios. Results showed the L.O.P.S. 2.0 system having the lowest drag of other popular brands’ oversized derailleur pulley systems.

retail case for muc-off lops 2.0 oversized derailleur pulley

Weight is 79.4g, and retail is £999.99 while they last. Available direct from Muc-Off.

Muc-Off.com

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17 Comments
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Hexsense
Hexsense
1 month ago

1 watt saving at $999 versus stock dura-ace pulleys (with fully grease packed bearing)?

okay…

blahblahblah
blahblahblah
1 month ago
Reply to  Hexsense

“Their own in-house testing” i think they need to change how the spell muc

Old man dan
Old man dan
1 month ago

Alot of money for not much benifit

Dinger
Dinger
1 month ago

$1,000 for one watt savings (assuming you’re religious about chain/lube maintenance). We’re in another “cocaine” era of cycling tech.

LAVAOWL
LAVAOWL
1 month ago

LOL MUC-OFF THEY DO IT ALL BUT NOTHING THE GREATEST. ITS LIKE THE SUNLITE OF THE CYCLING INDUSTRY.

MaraudingWalrus
MaraudingWalrus
1 month ago
Reply to  LAVAOWL

Isn’t Sunlite the Sunlite of the cycling industry?

LemondRider
LemondRider
1 month ago

Will this work on my Huffy Stone Mountain?

MiCk
MiCk
1 month ago
Reply to  LemondRider

As stated…
If your Huffy is running Dura Ace 9000/9100,
Then Yes…
Operators are standing by to take your order…

UcOff
UcOff
1 month ago

A grand, to save one watt. LO-F-L…

Ugo Fasta
Ugo Fasta
1 month ago

Ok it’s expensive and does very little. But a grand spent and you have that logo on your rear mech? Ouch.

WhateverBikes
1 month ago

I hope the people buying these make good use of the seconds they arrive earlier from training.

Ugo Fasta
Ugo Fasta
1 month ago
Reply to  WhateverBikes

Second. If they’re out for 3 hours.

Bgfd
Bgfd
1 month ago

11 speed chains are 36.6% faster than 12 speed? Does than mean 6 speed is even faster?

Adrian
Adrian
1 month ago
Reply to  Bgfd

Lol good question

Eric
Eric
1 month ago

Is that really the packaging? Seems incredibly wasteful and a clear indication that you’d be overpaying for something.

MTB4ME
MTB4ME
1 month ago

Oh Please, M-Off. Go back to windshield bug cleaner where you actually had cred…

Sinan
Sinan
1 month ago

Yeah, engineering advice from a company who makes solid metal cages for Apple airtag. Also a cheap-o company who chosed to not to pay the Apple to put the airtag label on the box.