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With 29’’ wheels that allow you to get over any obstacle, a comfortable and modern geometry, the Prorace has been designed and developed for cross-country trials. Rigid and precise, the aluminium semi-rigid is for novices and competition enthusiasts. It provides rigidity when picking up the pace again and steering accuracy; the Prorace 3.9 could let you gain precious minutes on your favourite routes. A true companion to push the limits. With the Prorace, wake up the competitor within you.

Key Features

  • Lapierre Prorace 3.9 2021 Cross-Country Mountain Bike 5

    In tune with the times

    Our new Prorace frame made of Supreme 5 aluminium alloy is perfect for mountain biking and cross-country cycling. Its geometry is adapted and designed around 29-inch wheels from XS to XL to make it easier to tackle roots and other stony ground, as well as easy trails
  • Lapierre Prorace 3.9 2021 Cross-Country Mountain Bike 7

    Assertive choices

    Our Prorace 3.9 is already solely designed for a single chainring 1x (one by) drivetrain around the new Shimano Deore 12-speed groupset. Combined with Boost technology on the fork and frame, it offers a gain in stiffness in the wheels and frame, as well as in ease of use.
  • Lapierre Prorace 3.9 2021 Cross-Country Mountain Bike 8

    A sleek design

    At Lapierre, design is part of our culture. This is why, in the first Prorace model and above, the internal routing of the cables and ducts provides both an aesthetic and mechanical solution.


Brake Type Disc Brake
Brakes Front Shimano SMRT30 180mm / 160mm Center Lock
Fork Suntour Raidon Remote QR15mm Air 100mm Boost
Frame Prorace 29″ Supreme 5 Alloy Disc, Boost, Pressfit, Ta 12x148, Int Brake RR
Handlebar Lapierre 6061 Top Flat W: 720mm Ø: 31.8mm
Headset FSA Orbit 1.5Z SC NO.57SC
Model Year 2021
Pedals NW 91K steel cage
Stem Lapierre Alloy 3D Forged 7° Ø: 31.8mm L: 60mm(XS, S) / 70mm (M, L)/ 80mm (XL)


Grips Lapierre by Herrmans DD30B
Saddle Lapierre by Velo
Seat Post Lapierre Alloy Forged Ø: 27.2mm L: 400mm


Rim Rodi Excalibur XC2 622x19C 32H Tapered Spokes
Tyres Tough Tom K-Guard 29X2.25 (Front) Rapid Rob K-Guard 29X2.25 (Rear)
Wheel size 29 ”

Bottom Bracket Shimano PF MTB92
Crankset Shimano Fcm-510 12spd 170mm/32T (Xs, S), 175mm/32T (M, L, XL)
Rear Wheel Hub Shimano MT410 Microspline
Sprocket Shimano New Deore Cs-M6100 12Spd 10–51T
Shift Lever Sram SX Eagle 12spd