XC Pro Bike: Decathlon Rockrider 900S FC prototype XC mountain bike of Stephane Tempier

Decathlon made waves earlier this year when their affordable Rockrider mountain bikes turned up on the professional cross-country race circuit. So when the UCI MTB XCO World Cup rolled into our backyard at Nové Město, we popped over to the Rockrider Team pit to get a closer look at Stephane Tempier’s carbon race bikes – both the 900 hardtail & 900S FC full-suspension… and some prototype gear!

Decathlon’s World Cup Rockrider XC bikes

Rockrider Racing Team XC 900S FC 120mm full-suspension mountain bike by Decathlon, Stephane Tempier, toptube detail

We were surprised when we first spotted the news that French big box sporting goods retailer Decathlon was sponsoring a World Cup XC mountain bike team with their budget Rockrider bike line-up. So we took a closer look and realized the brand had redeveloped a stock carbon & alloy bike into an all-carbon flex pivot bike.

But we wanted to know even more, so we got in touch with the Decathlon development team directly for an in-depth interview on where they are headed in the Bikerumor Podcast #58 earlier this month!

Rockrider Racing Team XC 900S FC full-suspension

Rockrider Racing Team XC 900S FC 120mm full-suspension mountain bike by Decathlon, Stephane Tempier, complete bike

We got a decent look at the details of the new 120mm travel full-carbon single pivot with carbon linkage-driven shock back in February.

Rockrider Racing Team XC 900S FC 120mm full-suspension mountain bike by Decathlon, Stephane Tempier, model name

But only now do we really see the official name of this pre-production cross-country prototype – the Rockrider XC 900S FC – with the S telling that it’s got rear Suspension and the FC that it’s Full Carbon.

Rockrider Racing Team XC 900S FC 120mm full-suspension mountain bike by Decathlon, Stephane Tempier, main pivot

As we suspected, the carbon front triangle is unchanged from the alloy-rear bikes you can buy in Decathlon’s big box stores today. But from that main pivot back, the one-piece UD carbon rear end is all-new, adding a seatstay flex zone to eliminate the need for a pivot above the dropout.

Rockrider Racing Team XC 900S FC 120mm full-suspension mountain bike by Decathlon, Stephane Tempier, Manitou Mara shock

Rockrider Racing Team bikes were all set up with Manitou air suspension. A Manitou Mara remote shock handles the 120mm of rear wheel travel, paired to a 120mm Manitou R7 Pro fork up front with classic Reverse Arch design.

Rockrider Racing Team XC 900S FC 120mm full-suspension mountain bike by Decathlon, Stephane Tempier, Fizik Antares Versus Evo Adaptive saddle

Stephane Tempier races on a carbon-railed Fizik Antares Versus Evo R1 Adaptive saddle with all-black 3D-printed padding.

Rockrider Racing Team XC 900S FC 120mm full-suspension mountain bike by Decathlon, Stephane Tempier, custom TRP Slate Evo brakes

Stopping is handled by a new set of custom painted-to-match TRP Slate Evo disc brakes, the cheapest and lightest to get TRP’s most recent complete braking system EVOlution.

Rockrider Racing Team XC 900S FC 120mm full-suspension mountain bike by Decathlon, Stephane Tempier, TRP TR-33 rotor

Instead of the stock one-piece stainless rotors, the Rockrider Racing Team uses the two-piece TRP TR-33 rotors with alloy 6-bolt carriers for better heat dissipation and laser-cut cleaning slots.

Rockrider Racing Team XC 900S FC 120mm full-suspension mountain bike by Decathlon, team bikes

Rockrider Racing Team XC 900 hardtail

Rockrider Racing Team XC 900 hardtail mountain bike by Decathlon, complete

The XC 900 is a budget hardtail you can already buy today for just 1900€ complete, but it’s still a capable-enough race bike – at least for the more tame World Cup XC courses.

Build kit on the hardtails is pretty much the same on the full-suspension bikes, although it does look like the team may run the R7 Pro forks in a shorter 100 or 110mm travel position.

Rockrider Racing Team XC 900 hardtail mountain bike by Decathlon, cockpit

Cockpit is the same with carbon bars from ProTaper and light alloy LYTI stems from French component maker Dulight. And both are built up with the lightweight BikeYoke Divine SL dropper seatpost and Triggy remote.

Rockrider Racing Team XC 900 hardtail mountain bike by Decathlon, TRP Slate Evo brake

The same TRP Slate Evo brakes and TR-33 rotors.

Rockrider Racing Team XC 900 hardtail mountain bike by Decathlon, prototype Hutchinson Skeleton tire

The bikes are all on Mavic Crossmax carbon wheels, wrapped with prototype Hutchinson Racing Lab development tires. Almost all of the Rockrider Racing Team bikes had this low-profile tread setup for the dry Nove Mesto course. The pattern looks to be the same as the long-running Skeleton, but the knobs may be slightly reshaped or at least have a lower profile for faster-rolling.

Rockrider Racing Team XC 900 hardtail mountain bike by Decathlon, non-driveside

Decathlon.fr & RockRiderRacingteam.com 

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Hexsense
Hexsense
6 months ago

Just a few days ago, there was discussion on MTBR whether extra weight (~150g) of Manitou R7 Pro over Fox 34SC is worth it for better damper and stiffer chasis in XC racing. It seems general opinions are: XC racers can get away with worse damper and more flexy fork if it means they can save weight.

starting point, some informative posts are a somewhere after:
https://www.mtbr.com/threads/2022-xco-xcm-equipment.1201596/page-22#post-15633204

myke
myke
6 months ago
Reply to  Hexsense

Its 150g. I dont see the point of that argument or discussion. I mean, that is like three sips of water LOL! I dont think 150g will make perceivable difference, probably not even a single watt.

Hexsense
Hexsense
6 months ago

TRP brake pricing make sense.
XC brakes are minimal and light, on other brands, why would XC brake cost more than the heavier and more complex enduro brakes providing that both use their best material available?

blahblahblah
blahblahblah
6 months ago
Reply to  Hexsense

and then road bikes that use even less of the good stuff, and they cost more again

myke
myke
6 months ago
Reply to  Hexsense

you would think but it is the other way around. It is generally easier to make something bigger and heavier than it is to make it lighter and smaller. most manufacturers will just add another set of pistons to a caliper for enduro and DH. perhaps, also change the lever and tweak the master volume… however, these are fundamentally the same.

Dink
Dink
6 months ago

we got to take a look at this at crabfest last weekend. great psi, and seatpost retention

TimE
TimE
6 months ago
Reply to  Dink

Psi?

TimE
TimE
6 months ago

I will cheering for this team going forward. If they can succeed on these budget bikes maybe the stranglehold expensive bikes have on the minds of age groups racers will break…..LOL … don’t be silly what am I saying it’s got to be top of the line Epic or nothing

Kicking stones while walking to Decathlon

Mariano
Mariano
5 months ago

Corrección la bicicleta no es XC 900s , en este nuevo modelo 2022 será RACE 900 s la doble suspensión. Y la rigida nuevo modelo 2022 se llama RACE 900 y todavía no está a la venta, solo la RACE 740 y no es la tope de gama

Cezary
Cezary
2 months ago

When the bike Rockrider XC 900S FC full-suspension (frame: carbon) will be avialable at Decathlon ready to be sold ? Promise was in week 32/2022 but today is week 39/2022 and no sign, the bike is unavialable. (see abovemention podcast with Rockrider Team and go to min. 3.26)