2021 Trek 820

A 26″ steel frame hardtail crosscountry bike with mid-range components and rim brakes. Compare the full range

2021 Trek 820
MSRP$439
Spec Level
Weight33.7 lbs
SuspensionHardtail
Travel75mm front
FrameSteel
ForkSuntour
Wheels26″ Aluminum
Drivetrain3 × 7
GroupsetTourney
BrakesRim
Where to Buy
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Compare With Similar Bikes

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Gearing

3 × 7 — 21 speed

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 »

Spec level →$0$100$200$300$400
This bike
Other crosscountry bikes

Geometry

Sizing
XS

4'5" – 5'2"

SM

5'0" – 5'6"

MD/LG

5'4" – 5'11"

LG

5'9" – 6'3"

XL

6'1" – 6'6"


Specs
Build
Frame

Trek Custom Steel, rack mounts, 135x5mm QR

Tire Clearance2"

ColorMatte Trek Black

Fork

SR Suntour M-3030, coil spring, 100x5mm QR, 75mm travel

Headset

1-1/8'' threadless

Stem

Size: 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

Handlebar

Size: XS, S, Bontrager alloy, 31.8mm, 15mm rise, 660mm width; Size: M/L, L, XL, Bontrager alloy, 31.8mm, 15mm rise, 690mm width

Saddle

Bontrager Sport

Seatpost

Size: 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

Grips

Bontrager SSR

Groupset
Rear Derailleur

Shimano Tourney TY300, long cage, 34T max cog

Front Derailleur

Shimano Tourney TY500, 31.8mm clamp, top swing, dual pull

Crank

Shimano Tourney TY301, 42/34/24, 170mm length

Shifters

Shimano Tourney EF41, 7 speed

Cassette

Shimano TZ500, 14-28, 7 speed

Chain

KMC Z7, 7 speed

Brakes

Tektro alloy linear-pull

Wheels
Rims

Bontrager AT-550, alloy, 36-hole, schrader valve

Front Hub

Formula FM21 alloy, 100x5mm QR

Rear Hub

Formula FM31 alloy, 7sp freewheel, 135x5mm QR

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