2021 Trek Checkpoint SL 6

A carbon frame gravel bike with high-end components and hydraulic disc brakes, priced near the middle of the Checkpoint model range. Compare the full range

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2021 Trek Checkpoint SL 6
MSRP$3,999
Weight20.1 lbs
SuspensionRigid
FrameCarbon
ForkCarbon
Wheels700c
Tires40c
Tire Clearance45c
Drivetrain2 × 11
GroupsetGRX 800
BrakesHydraulic Disc
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Gearing

2 × 11 — 22 speed

Checkpoint SL 6

38 mph

Similar Bikes

36 mph

The Checkpoint SL 6 is easier to ride up hills than similar bikes.

Similar bikes won‘t keep up with the Checkpoint SL 6 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$500$1,000$1,500$2,000$2,500$3,000$3,500
This bike
Other gravel bikes

Reviews

September 2021

Bicycling
The New Trek Checkpoint Line Is For Gravel Riders of All Kinds

Updated geometry and differentiated models for speed, adventure, and all purpose riding

Read Full Review

March 2020

Whistler Mountain Bike
2019 TREK Checkpoint SL6 Review

Out of the saddle putting down maximum power into the Checkpoint, it feels like a nice carbon road bike.

Read Full Review

September 2021

Cycling Tips
2022 Trek Checkpoint gravel bike review: Longer, but not slacker - CyclingTips

Major geometry changes make for a new personality that’s rowdier, but also perhaps more polarizing.

Read Full Review

December 2020

Gran Fondo
Trek Checkpoint SL 7 review

Trek includes adjustable chainstays on their Checkpoint SL 7 gravel bike and offers new options for future gravel adventures like single-speed builds.

Read Full Review

February 2020

BikeRadar
Trek Checkpoint AL 4 review

All-road versatility with refined road manners for a fine riding machine

Read Full Review

November 2018

BIKEPACKING.com
Trek Checkpoint Review (SL6): Dirt Road Rocketry

Joe tested the Trek Checkpoint SL6 on weekly fast roadie coffee shop rides, a 10-hr dirt randonee, and VT gravel/singletrack explorations. Here's the review

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July 2018

Road Bike Action
Gravel Bike Test: Trek Checkpoint SL6

Better late than never, Trek’s Checkpoint has arrived

Read Full Review

June 2018

road.cc
Trek Checkpoint SL 6

Sadly disappointing gravel bike debut from Trek, though fine if you want a fat-tyred road bike

Read Full Review


Geometry

Sizing
49cm

5'1" – 5'5"

52cm

5'3" – 5'7"

54cm

5'5" – 5'9"

56cm

5'8" – 5'12"

58cm

5'10" – 6'2"

61cm

6'0" – 6'4"


Specs
Build
Frame

500 Series OCLV Carbon, IsoSpeed, tapered head tube, Control Freak internal routing, 3S chain keeper, rack and fender mounts, flat mount disc, horizontal sliding dropouts, 142x12mm thru axle

BB StandardBB90, 90.5mm, press-fit

Tire Clearance45c

Fork

Checkpoint carbon, tapered carbon steerer, rack mounts, fender mounts, flat mount disc, 12x100mm thru axle

Bottom Bracket

Trek BB90

Headset

FSA Integrated, sealed cartridge bearing, 1-1/8'' top, 1.5'' bottom

Stem

Size: 49, Bontrager Pro, 31.8mm, Blendr compatible, 7 degree, 80mm length; Size: 52, 54, Bontrager Pro, 31.8mm, Blendr compatible, 7 degree, 90mm length; Size: 56, 58, Bontrager Pro, 31.8mm, Blendr compatible, 7 degree, 100mm length; Size: 61, Bontrager Pro, 31.8mm, Blendr compatible, 7 degree, 110mm length

Handlebar

Size: 49, Bontrager Elite IsoZone VR-CF, alloy, 31.8mm, 93mm reach, 123mm drop, 38cm width; Size: 52, Bontrager Elite IsoZone VR-CF, alloy, 31.8mm, 93mm reach, 123mm drop, 40cm width; Size: 54, 56, Bontrager Elite IsoZone VR-CF, alloy, 31.8mm, 93mm reach, 123mm drop, 42cm width; Size: 58, 61, Bontrager Elite IsoZone VR-CF, alloy, 31.8mm, 93mm reach, 123mm drop, 44cm width

Saddle

Bontrager Arvada Comp, steel rails, 138mm width

Seatpost

Size: 49, 52, 54, 56, Bontrager carbon seatmast cap, 20mm offset, short length; Size: 58, 61, Bontrager carbon seatmast cap, 20mm offset, tall length

Groupset
Rear Derailleur

Shimano GRX RX810, long cage, 34T max cog

Front Derailleur

Shimano GRX RX810, braze-on

Crank

Size: 49, 52, Shimano GRX RX810, 48/31, 170mm length; Size: 54, 56, Shimano GRX RX810, 48/31, 172.5mm length; Size: 58, 61, Shimano GRX RX810, 48/31, 175mm length

Shifters

Shimano GRX RX810, 11 speed

Cassette

Shimano Ultegra HG800-11, 11-34, 11 speed

Chain

Shimano Ultegra HG701, 11-speed

Brakes

Shimano RX810 hydraulic disc, flat mount

Wheels
Rims

Bontrager Paradigm Comp 25, Tubeless Ready, 25mm rim width, 100x12mm thru axle

Tires

Bontrager GR1 Team Issue, Tubeless Ready, Inner Strength casing, aramid bead, 120 tpi, 700x40c

Disk Rotors

Shimano RT800, centerlock, 160mm

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