B'Twin Rockrider Explore 520 29" Touring Mountain Bike

B'Twin Rockrider Explore 520 Touring MTB

A handful of Explore 520 pics

Complete MTB spec

This 29" mountain bike is designed for mountain bike rides lasting 2 to 3 hours, all year round.

Comfortable, sensitive and responsive: with the Explore 520's 29" wheels (27.5" in S), 100 mm hydraulic fork and hydraulic disc brakes, you can ride all the best lines! Weight: 14.5 kg in size M (without pedals).

Frame material: Aluminium.

Type: Hardtail.

Wheel size: 29" (M / L / XL), 27.5" (S).

Fork travel: 100 mm.

Drivetrain: 1x10.

Brakes: Hydraulic.

Seat post: Aluminium.

Frame, stem and handlebar warranty: lifetime.

Weight: S: 14.15 kg.

M: 14.5 kg.

L: 14.6 kg.

XL: 14.7 kg. Net weight without pedals.

Frame: Composition: 6061 aluminium.

135 mm x 9 mm rear axle. QR spindle. 73 mm threaded bottom bracket (BSA).

Protective cover for housing. 27.2 mm seat tube. Straight head tube.

2 bottle cage mounts (1 on size S) / Pannier rack mounts.

Drivetrain: 30 T single chainring (compatible with 32 T). 170 mm crank.

"Thru axle / external bearing" bottom bracket. Microshift AdventX. 10-speed shifter and rear derailleur.

11-48 cassette. KMC X10 chain.

Suspension: Suntour XCM fork with alu steerer tube.

Coil spring with hydraulic cartridge. 100 mm travel. 30 mm diameter stanchion.

QR axle. 9 x 100 mm. Turnkey lockout on the fork.

Wheels: 29" (M / L / XL), 27.5" (S). Tubeless ready rims, Presta valve. 23 mm inner width (28 mm outer).

32 spokes (M / L / XL), 28 spokes (S). 6-bolt disc. Shimano / Sram freehub.

Brakes: Hydraulic disc brakes. Tektro TK-M276.

Number of pistons: 2.

Front disc: 160 mm.

Rear disc: 160 mm.

Adjustable reach: Yes.

Riding position: Handlebar: Rockrider Sport.

Material: Aluminium.

Width: 740 mm (M / L / XL), 700 mm (S).

Stem: Rockrider.

Material: Aluminium.

Size: 60 mm.

4 adjustment increments: +0 mm, +5 mm, +20 mm, +25 mm. Compatible with GARMIN, MIO or BRYTON bike computer / GPS brackets.

Saddle / Seat post: Rockrider Ergofit EVO saddle.

Rockrider Sport seat post.

Material: Aluminium.

Diameter: 27.2 mm.

Length: 350 mm (S / M), 400 mm (L), 450 mm (XL).

Tyres: Rockrider All Conditions. 29"x2.2" (M / L / XL), 27.5"x2.2" (S).

Carcass: 60 TPI.

Pedals: Rockrider 520 Grip resin flat pedals.
.. more details.

B'Twin Bikes

B'Twin are a popular choice of bike in the UK, partly due to their widespread distribution by Decathlon, and partly due to the value they offer. Their bikes are divided into several slightly overlapping ranges, with Triban best known for road and gravel bikes, and Rockrider gaining a reputation for high performing MTBs to suit every budget. Elops largely consist of a range of city bikes, whereas Riverside focus on hybrids. All in all, B'Twin bikes are well worth checking out given the size of their ranges; there's a model to suit most budgets.

Rockrider Mountain Bikes

Rockrider are Decathlon's off-road offerings, comprising of a series of kids bikes and adult hardtails, full suspension steeds and even a handful of high end E-MTBs.

This brand was launched in 2018, when Decathlon decided to split their B'Twin bikes into different genres. In terms of prices, there's something for everyone, with adult's MTBs starting at just over £200 and rising up to high end lightweight race bikes at nearly the £4000 mark.

If you want to ride off-road, and would prefer to buy from Decathlon, then the Rockrider mountain bike range is for you.