2021 Trek 820

A 26″ steel frame hardtail crosscountry bike with modest components and rim brakes, priced at the high end of the 820 model range. Compare the full range

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2021 Trek 820
MSRP$439
Weight33.7 lbs / 15.3 kg
Front Travel75mm
FrameSteel
ForkSunTour
Wheels26″
Drivetrain3 × 7
GroupsetTourney
BrakesRim
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Gearing

3 × 7 — 21 speed

2021 Trek 820
23 mph
Similar Bikes
27 mph

Similar bikes are easier to ride up hills than the 820.

The 820 won‘t keep up with similar bikes while riding downhill or sprinting.


Estimated Spec Level

Based on build material and quality level of the frame, fork, wheelset, groupset, suspension system, and more. Learn more

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Geometry

Specs
Build
FrameTrek Custom Steel, rack mounts, 135x5mm QR
ForkSR Suntour M-3030, coil spring, 100x5mm QR, 75mm travel
Headset1-1/8'' threadless
StemSize: XS, Bontrager alloy, 31.8mm, Blendr compatible, 7 degree, 60mm length; Size: S, Bontrager alloy, 31.8mm, Blendr compatible, 7 degree, 80mm length; Size: M/L, L, Bontrager alloy, 31.8mm, Blendr compatible, 7 degree, 90mm length; Size: XL, Bontrager alloy, 31.8mm clamp, Blendr compatible, 7 degree, 100mm length
HandlebarSize: XS, S, Bontrager alloy, 31.8mm, 15mm rise, 660mm width; Size: M/L, L, XL, Bontrager alloy, 31.8mm, 15mm rise, 690mm width
SaddleBontrager Sport
SeatpostSize: XS, S, Bontrager alloy, 29.2mm, 12mm offset, 300mm length; Size: M/L, L, Bontrager alloy, 29.2mm, 12mm offset, 330mm length; Size: XL, Bontrager alloy, 29.2mm, 12mm offset, 400mm length
GripsBontrager SSR
Groupset
Rear DerailleurShimano Tourney TY300, long cage, 34T max cog
Front DerailleurShimano Tourney TY500, 31.8mm clamp, top swing, dual pull
CrankShimano Tourney TY301, 42/34/24, 170mm length
ShiftersShimano Tourney EF41, 7 speed
CassetteShimano TZ500, 14-28, 7 speed
ChainKMC Z7, 7 speed
BrakesTektro alloy linear-pull
Wheels
RimsBontrager AT-550, alloy, 36-hole, schrader valve
Front HubFormula FM21 alloy, 100x5mm QR
Rear HubFormula FM31 alloy, 7sp freewheel, 135x5mm QR
2021 Trek 820
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