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  • Checkpoint SL 6
2019

Checkpoint SL 6

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$3,999.99 Model 22634

Checkpoint SL 6 is a carbon gravel bike without limits. It's designed to take you places you'd never reach on a standard road bike—like the mud-caked finish line of the world's greatest gravel races. A lightweight OCLV Carbon frame with gravel-smoothing IsoSpeed, a full Shimano Ultegra drivetrain, and extra mounts for gear and accessories make Checkpoint SL 6 a true gravel powerhouse and the best choice for serious all-road adventurers.

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It's right for you if...

You have big dreams for the likes of Dirty Kanza, Land Run 100, and Trans Iowa, and know you'll need the most dialed gravel bike for these epic adventures. You also love the idea of one bike with such incredible versatility that it excels at gravel racing, adventure road riding, bikepacking, and whatever kind of ride you feel like tackling next.

The tech you get

A 500 Series OCLV Carbon frame with Rear IsoSpeed, a full Shimano Ultegra drivetrain, 700x40 Bontrager GR1 Tubeless Ready gravel tires, powerful flat mount hydraulic disc brakes, and Bontrager Paradigm Comp Disc wheels with Shimano RT800 Ice-Tech FREEZA rotors and finned brake pads for reliability and extra stopping power. Plus, Control Freak internal cable routing, a carbon seatmast cap, Carbon Armor to protect the frame against debris, 12mm thru axles, and Stranglehold dropouts that make it easy to fine-tune your geometry or run singlespeed.

The final word

Trek's best carbon gravel bike for the longest days, roughest roads, and biggest adventures. It's light, fast, comfortable, and spec'd with parts that stand up to the most rugged terrain, like the upgraded Bontrager Paradigm wheelset and a full Shimano Ultegra drivetrain.

The Walkthrough

favorite_borderWhy you'll love it

  1. The IsoSpeed decoupler cuts down on fatiguing bumps in gravel so you can wander more, reach new places, and stay stronger longer
  2. This bike is exceedingly versatile and suited to a wide variety of ride styles, including gravel rides, bikepacking, and daily commutes
  3. Extra mounts on the top tube, seat tube, and both sides of the down tube make it easy to carry extra gear and water

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Features

500 Series OCLV

500 Series OCLV achieves a superb balance of light weight, strength, and stiffness that's perfectly suited to the sophisticated frame technologies that distinguish Trek frames.

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IsoSpeed decoupler

At the core of Trek's endurance comfort technology is the IsoSpeed decoupler, the result of an 18-month study of how a racing bike performs over rough roads, and how that performance affects the rider.

Learn more

Flat Mount disc brakes

All-new Flat Mount disc brakes are more elegant, lighter, smaller, and cleaner than traditional disc brakes, providing superior performance and stopping power under harsh conditions.

12mm Thru-Axle

A 12mm front thru axle makes steering more precise for more control, and the quick-release feature makes wheel removal easy.

Carbon Armor

Sometimes you need a little extra protection, so we developed our light, tough external Carbon Armor polymer shield. It provides reassurance when you know your down tube is bound to take some abuse.

Stranglehold dropout

Horizontal sliding dropout with redundant securing mechanisms allows for no-slip singlespeed or geared options and provides the ability to dial in the geometry to match each rider’s style.

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Ride Tuned seatmast

Our no-cut Ride Tuned seatmast is designed for the rigors of pro racing. It's the lightest, most comfortable solution for day-in, day-out performance and comfort, however rough the roads or hard the riding.

Tubeless Ready rims

Bontrager TLR (Tubeless Ready) Road is the first fully integrated tubeless system for road wheels. When you go tubeless with TLR, you can run lower tire pressure for increased traction and comfort without the threat of pinch flats.

Specifications

  • Frameset

    Frame
    500 Series OCLV Carbon, Rear IsoSpeed, Stranglehold dropouts, tapered head tube, BB90, flat mount disc brakes, rack mounts and hidden fender mounts, Control Freak, internal cable routing, 12mm thru axle, 3S chain keeper, Ride Tuned seatmast
    Fork
    Checkpoint carbon disc, carbon tapered steerer, flat mount disc brakes, rack mounts, hidden fender mounts, 12mm thru axle

  • Wheels

    Wheels
    Bontrager Paradigm Comp Tubeless Ready Disc, 12mm thru axle
    Tires
    Bontrager GR1 Team Issue, Tubeless Ready, Inner Strength sidewalls, 120tpi, aramid bead, 700x40c
    Max tire size
    45c Bontrager tires (49 & 52cm: 40c due to toe overlap), with at least 4mm of clearance to frame

  • Drivetrain

    Shifters
    Shimano Ultegra, 11 speed
    Front derailleur
    Shimano Ultegra, braze-on
    Rear derailleur
    Shimano Ultegra, Shadow design, 11 speed
    Crank
    Shimano Ultegra, 50/34 (compact)
    Bottom bracket
    BB90
    Cassette
    Shimano HG800, 11-34, 11 speed
    Chain
    Shimano HG600, 11 speed
    Pedals
    Not included

  • Components

    Saddle
    Bontrager Montrose Comp
    Seatpost
    Bontrager Ride Tuned carbon seatmast cap, 20mm offset
    Handlebar
    Bontrager RL IsoZone VR-CF, 31.8mm
    Grips
    Bontrager tape
    Stem
    Bontrager Elite, 31.8mm, 7 degree, w/computer & light mounts
    Headset
    Integrated, cartridge bearing, sealed, 1-1/8˝ top, 1.5˝ bottom
    Brakeset
    Shimano Ultegra flat mount hydraulic disc

  • Weight

    Weight
    56cm - 8.94 kg / 19.7 lbs
    Weight limit
    This bike has a maximum total weight limit (combined weight of bicycle, rider, and cargo) of 275 pounds (125 kg).
We reserve the right to make changes to the product information contained on this site at any time without notice, including with respect to equipment, specifications, models, colors, and materials.
Bike and frame weights are based off Trek pre-production painted frames at time of publication. Weights may vary in final production.

Sizing & fit

The charts below show our recommended sizes based on height, but there are some other factors, like arm and leg length, that determine a great fit. That’s why you’ll see some overlap in our recommendations. Not every rider who’s 5´8˝, for example, will fit on the same size bike. The best way to find your perfect fit is to consult the experts at your local Trek retailer.

 

Rider Height

Inseam

All measurements provided in cm unless otherwise noted.

Frame size number A — Seat tube B — Seat tube angle C — Head tube length D — Head angle E — Effective top tube G — Bottom bracket drop H — Chainstay length I — Offset J — Trail K — Wheelbase L — Standover M — Frame reach N — Frame stack Saddle rail height minimum (w/short mast) Saddle rail height maximum (w/tall mast)
49 cm 49 75.0° 9.0 71.4° 51.5 7.8 42.5 4.9 6.6 99.5 72.3 37.3 53.2 57.5 66.5
52 cm 52 74.0° 10.7 71.6° 53.6 7.8 42.5 4.9 6.5 100.5 74.9 37.9 54.9 61.0 70.0
54 cm 54 73.5° 12.6 71.8° 55.1 7.6 42.5 4.9 6.4 101.4 77.5 38.3 56.7 64.0 73.0
56 cm 56 73.0° 14.5 72.2° 56.6 7.6 42.5 4.9 6.1 102.0 79.5 38.7 58.6 67.0 76.0
58 cm 58 73.0° 17.1 72.3° 57.7 7.4 42.5 4.9 6.1 103.2 81.7 39.1 60.9 69.0 78.0
61 cm 61 73.0° 20.0 72.6° 59.2 7.4 42.5 4.9 5.9 104.4 84.6 39.7 63.8 72.0 81.0

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