29" Carbon Hardtail Mountain Bike XC 900 GX Eagle Lunar

THE STORY OF THE XC 900 MOUNTAIN BIKE...

Entirely designed and developed in France at the B'Twin Village (Lille).

The Rockrider team developed, designed and tested this XC 900 29" Mountain bike, by involving XC mountain bikers like our technical partner and mountain bike professional, Milton Ramos, winner of different races all over the world.



To better meet your needs, the Rockrider XC 900 29 " is assembled just meters away from the design team, in our factory in Lille.

A UNISEX MOUNTAIN BIKE

Men's or women's mountain bike? This Rockrider XC 900 29" MTB is unisex.



For greater comfort, the women on our mountain bike team recommend replacing the saddle with the Women's 500 Sport saddle, which is adapted to women's bodies.

CHOOSING YOUR MOUNTAIN BIKE SIZE

Several sizes available:

M: between 5'3" and 5'9"

L: between 5'9" and 6'

XL: between 6'1" and 6'5"



If you are on the edge between 2 sizes, we recommend following the exact size listed.

Frame

New Rockrider Cross Country 29" carbon frame. We optimized the carbon fiber to improve the stiffness (20% more than the 27.5" version) and low weight.

The frame is handmade.

Geometry specific to 29" wheels

Rear axle 148 mm x 12 mm. BOOST

"Press fit 92" bottom bracket.

27.2 mm diameter seat post.

Compatible with 2 bottle cage.

Exclusive compatibility 1x

Weight in size M 2.2 lbs

FRONT SUSPENSION

Making obstacles no longer feel like obstacles.



Rockshox Reba RL with 100 mm travel. Axle BOOST

Front Suspension directly lockable (in open or closed position) on handlebar thanks to COMBO LOCK handle.

REAR SUSPENSION: NONE

This mountain bike has no rear suspension.

Drivetrain

Ride anywhere, whether up or down hill with this 12-speed cassette.



SRAM GX EAGLE drivetrain, single 1x12 chainwheel, for larger meters of development and climbing more easily.

Chainwheel: SRAM Turativ STYLO 34 teeth to pick up more speed.

SRAM XG1275 Eagle cassette with 12 cogs: 10 to 50 teeth. The 50-teeth cog ensures you get the right gear ratio for climbing the most challenging sections, whilst 10-teeth cog is ideal for developing the fastest speed.

HANDLEBAR / STEM / STEERING / GRIPS

Keep stable and find your attack position.



ROCKRIDER Comp Flat handlebar, 720 mm wide for better control of the 29" wheels

ROCKRIDER COMP stem adapted to the size (70 mm in size M, 80 mm in size L and 90 mm in size XL).

Semi-integrated headset with sealed bearings.

Lightweight, "lock on" style ROCKRIDER 900 grips screw onto the handlebars.

SADDLE / SEAT POST

For maximum lightness and comfort, the XC 900 is equipped with a 27.2 mm diameter B'Twin Carbon seat post. The 400 mm length allows a wide range of adjustment. (350 mm in size M)



The new ROCKRIDER XC/AM saddle with Ergofit system provides greater comfort while pedaling.

The saddle weighs 9.3 oz.

BRAKES

The choice of double hydraulic disc brakes for incisive braking.



Exclusive SRAM Level T hydraulic disc brakes.

Front 160 mm disc, 160 mm rear disc.

WHEELS

29" : wheels up to the challenge of XC!



MAVIC Crossmax Tubeless Ready wheels in 15 mm at the front and 12 mm at the rear. BOOST

Inner rim width: 25 mm.

Tubeless Mavic rim strip.

UST valve included.

XD Pound Wheel

ETRTO Dimension: 622x25TSS

Sealed bearings.

Weight of both wheels without tires: 4.3 lbs

TIRES

Grip and move over all types of terrain.



Hutchinson Skeleton TR 29x2.1 Tubeless Ready tires

Low profile tire, lightweight and high-performance, designed for rides on dry ground.

A tread that ensures greater performance.

Side lugs to provide maximum grip.

PEDALS

The bike is supplied with B'Twin Flat Pro platform pedals. However, for better performance when pedaling, we recommend replacing them with clipless pedals (not included).

EASILY TRANSPORT AND STORE YOUR MOUNTAIN BIKE

The front and rear wheels attach and remove in 1 motion: you just need a hex key (size 6).

The rear derailleur has a screed that locks and unlocks easily to easily attach or remove the rear wheel.

WEIGHT

22.7 lbs in size M, without pedals.

23.1 lbs in size L, without pedals.

23.6 lbs in size XL, without pedals.



Weight with inner tube



The weight can vary based on the tolerance of the components.

The complete bike (MTB + fully equipped rider) should not exceed 265 lbs.

OUR ADVICE FOR YOUR FIRST RIDE

During your first outings, the equipment on your bike will gradually adjust itself (chain, dérailleur, brakes, etc.).

We offer a free inspection in the 6 months following purchase, where our technicians will carry out a 13-point check of your bike.

Access all our advice on handling your bike:

https://support.decathlon.fr/velos-tout-terrain-vtt-fr-tp_19822