Trek Check-OUT SL Frameset
Trek / Gravel Bikes
For the roads that turn to trail.
Check-OUT SL Frameset is an adventure-ready gravel frame built for getting way, way out there. Its 500 Series OCLV Carbon frame features 55mm of rear travel via a RockShox SIDLuxe Ultimate IsoStrut shock and includes integrated mounts for bags and racks. It’s the perfect starting point for building your dream gravel rig or ultra-endurance explorer.
Based on the bike's size chart. Your complimentary baseline fit in store dials in the rest.
Ship to store · free pickup, usually ready in 4–7 business days
Questions are welcome. No pressure, no bike jargon required.
The ride, not just the specs
Check-OUT picks up where most gravel bikes stop. It's made for rougher tracks, bigger days, and the kind of exploring where you're not quite sure what's around the next bend.
Pack a little more, ride a little farther, and see where it goes.
What makes it special
55mm rear travel and a new 60mm Rudy XL suspension fork designed in collaboration with RockShox help smooth out rough gravel roads and let you venture onto singletrack with more comfort and capability than a rigid gravel bike.
A new GR Check-OUT gravel drop bar has multiple hand positionings for more comfort and efficiencey wherever your ride takes you. Settle into narrow tops for more speed on champagne gravel or reach for the extra wide drops for total control on the rough stuff.
Check-OUT's full suspension setup is proven to decrease fatigue and increase comfort and control when compared to its rigid counterparts, leading to a 7.3% reduction in rider ventilation, a 41.5% reduction in fatiguing vibrational energy, and 23% less steering variation.
For the detail-oriented
Tap any group to see every part.
Measurements in cm unless noted.
| Size | S | M | ML | L | XL |
|---|---|---|---|---|---|
| Rider height | 5'2"–5'5" | 5'5"–5'10" | 5'10"–6'2" | 6'2"–6'4" | 6'4"–6'8" |
| Seat tube (A on the drawing) | 44.0 | 47.0 | 52.0 | 54.0 | 56.0 |
| Seat tube angle (B on the drawing) | 74.6° | 74.2° | 73.7° | 73.0° | 72.6° |
| Head tube length (C on the drawing) | 9.4 | 13.3 | 14.9 | 17.0 | 19.3 |
| Head tube angle (D on the drawing) | 68.8° | 69.0° | 69.4° | 69.5° | 69.4° |
| Eff. top tube (E on the drawing) | 56.4 | 58.9 | 59.7 | 61.3 | 62.8 |
| BB drop (G on the drawing) | 7.0 | 7.0 | 7.0 | 6.8 | 6.8 |
| Chainstay length (H on the drawing) | 44.2 | 44.2 | 44.2 | 44.2 | 44.2 |
| Offset (I on the drawing) | 4.5 | 4.5 | 4.5 | 4.5 | 4.5 |
| Trail (J on the drawing) | 9.2 | 9.1 | 8.8 | 8.8 | 8.8 |
| Wheelbase (K on the drawing) | 108.1 | 110.5 | 111.7 | 113.5 | 115.0 |
| Standover (L on the drawing) | 77.2 | 80.4 | 83.8 | 84.6 | 85.2 |
| Reach (M on the drawing) | 39.5 | 40.7 | 41.7 | 42.7 | 43.5 |
| Stack (N on the drawing) | 58.0 | 61.7 | 63.4 | 65.2 | 67.3 |
| Wheel size | 700c | 700c | 700c | 700c | 700c |
The Atlanta Cycling difference
Specs matter. But so does how a bike feels when you ride it. Our team is here to help you choose the right size, understand the details, and get comfortable before your first ride.
When you buy from Atlanta Cycling, you're not just getting a box with a bicycle in it. You're getting a 30-day money-back guarantee, a complimentary baseline fit, lifetime basic adjustments, and real people who want you to love every mile.
Four neighborhood stores. One shared passion.
Ansley. Alpharetta. Roswell. Vinings. Stop by, take a test ride, ask questions, and meet the people who will be here long after your first ride.
