A Comparison of Winter Racing Fat Bikes: Pivot LES Fat, Trek Farley, Salsa Beargrease and Borealis Crestone

Winter fat bike racing presents a unique opportunity for fat bike enthusiasts to test their skills, fitness, hardiness and gear. The fat bikes we will be comparing are the Pivot LES Fat Pro, Trek Farley 9.6, Salsa Beargrease C X01, and Borealis Crestone Eagle XX1. The first thing you may wonder is what makes these bikes different from each other? It's all in the details!

We have enjoyed several fat bike races and these bikes would each be on our shortlist for not only racing, but also some long distance winter fat bike rides. Compare the components, geometry, and pricing below on each build.

Key Specs

Specifications that are the most important to picking a mountain bike.
Specs Beargrease C X01 Eagle Crestone Eagle XX1 Farley 9.6 LES Fat Pro XT w/ Pivot Carbon Rigid Fork - 27 Fat
Price (USD)6799607735004299
Rear Travel (mm)0000
Front Travel (mm)0000
Head Tube Angle68.56706969
Seat Tube Angle73737372
Wheel Size (in)27.527.527.527.5
Max Tire Width (in)29x3, 27.5x4 26x529x3, 27.5x5 26x5, 27.5x4.5 26x4.729x3, 27.5x4.5 26x5
Component GroupX01XX1GXXT
Frame MaterialCarbonCarbonCarbonCarbon
Weight (kgs)11.8810.5813-
The component grouping each mountain bike comes with.
ComponentBeargrease C X01 EagleCrestone Eagle XX1Farley 9.6LES Fat Pro XT w/ Pivot Carbon Rigid Fork - 27 Fat
Rear Shock---None
ForkKingpin DeluxeBorealis Rigid CarbonBontrager Haru, tapered alloy steerer, OCLV Carbon lowers, 490mm axle-to-crown, 15x150mm thru axlePivot LES Fat Carbon
TiresF: - R: -F: - R: -F: - R: -F: - R: -
WheelsetHubs: DT Swiss 350 15 x 150 mm, DT Swiss 350 12 x 197 mm Rims: WHISKY No.9 76WHubs: Borealis 6 Pawl; Front: 15x150; Rear: 12x197; Rims: HED Carbon 27.5 x 85mmHubs: Bontrager alloy, sealed bearing, 6-bolt, 15x150mm thru axle; Bontrager alloy, sealed bearing, 6-bolt, Rapid Drive 108, SRAM XD driver, 197x12 mm thru axle Rims: SUNRingle Mulefut 80 SL, 32-hole cutoutSUNringlé Mulefüt 80SL w/ SUNringlé SRC hub - 27.5" 15x150 F/12x197R
BrakesSRAM G2 RSCSRAM G2 Ultimate-Shimano XT M8100 2-piston
RotorsSRAM Centerline 160mm/160mmF: - R: -SRAM Centerline 160mm/160mmShimano SLX 6-bolt - 180mm Shimano SLX 6-bolt - 160mm
Stem Salsa Guide Trail, 35.0 mm diameterBorealisBontrager Elite, 31.8mm, Blendr compatible, 7 degree, 60mm lengthPhoenix Team XC/Trail
HeadsetCane Creek 40BorealisFSA IS-2Pivot Precision Sealed Cartridge
HandlebarsSalsa Guide 35.0 CarbonBorealis Carbon Bar, 35mm diameterBontrager Rhythm Comp, alloy, 31.8mm, 15mm rise, 750mm widthPhoenix Team Low Rise Carbon - 760mm
Shift LeversSRAM X01 EagleSRAM XX1SRAM GX EagleShimano XT M8100 ISPEC EV 12-Speed
GripsSalsa File Tread Lock-OnBorealisESI ChunkyPhoenix Factory Lock-On
SaddleWTB Volt Cromoly SL MediumBorealisBontrager ArvadaPhoenix WTB Pro Vigo
SeatpostSalsa Guide CarbonBorealis Rigid Carbon 31.6mm diameterTranzX JD-YSP18 31.6mm diameterPhoenix Pro Carbon
Bottom Bracket-SRAM DUB 100mmSRAM DUB, 121mm, PressFit-
CassetteSRAM XG-1295 Eagle, 10–52t, 12 speedSRAM Eagle XG 1299 10-50 Gold 12spdSRAM Eagle XG-1275, 10-52t, 12 spdShimano SLX M7100 10-51t
ChainSRAM GX EagleSRAM X12 GoldSRAM GX EagleShimano CN-M8100 12-Speed
CranksetTruvativ STYLO C Eagle Fat5 DUB, 30tSRAM Eagle XX Carbon 30t, 175mmSRAM GX Eagle, DUB, 30T alloy FAT 5 ringRace Face Turbine 30t Fat Bike
Rear DerailleurSRAM X01 EagleSRAM Eagle XX1 12spdSRAM GX Eagle 12spdShimano XT M8100 SGS 12-Speed
Pedals--VP-536 nylon-
Geometry numbers for each bike, the fit, feel, & handling.
Geometry Beargrease C X01 Eagle Crestone Eagle XX1 Farley 9.6 LES Fat Pro XT w/ Pivot Carbon Rigid Fork - 27 Fat
Crank Length (mm)170175170-
Stem Length (mm)705070-
Seatpost Length (mm)--403-
Saddle Width (mm)--138-
Handlebar Width (mm)800-750760
Reach (mm)426.5437.5410417.1
Top Tube Length (mm)612610594607.1
Stack (mm)606.7625601618
Wheelbase (mm)1129.2-11191122.4
Chainstay Length (mm)440459455436.9
BB Drop (mm)656067-
BB Height (mm)--313311.4
Head Tube Angle (degrees)68.56706969
Seat Tube Angle (degrees)73737372
Head Tube Length (mm)118120100116.8
Bike Standover Height (mm)744.4-739718.2
Fork Rake Offset (mm)51-51-
Fork Length (mm)483---