2027 Trek Check-OUT SL vs 2026 Forbidden Puritan Framekit
The Forbidden Puritan Framekit size closest to your ML is the S3. Compare the S3 instead
What changes on the Forbidden Puritan Framekit
- Frame stack
- +1 mm
- About the same height
- Frame reach
- n/a
- One of the bikes has no number for this
- Wheelbase
- +61 mm
- Longer: steadier at speed
- Head angle
- −1.7°
- Slacker: calmer steering
- Chainstays
- n/a
- One of the bikes has no number for this
The two frames
We can't draw these frames yet. The Trek Check-OUT SL numbers we have for size ML are missing the seat angle. The numbers below still compare.
Geometry side by side
| Measurement | Trek Check-OUT SL ML | Forbidden Puritan Framekit S4 | Difference |
|---|---|---|---|
| Reach | 417 | not listed | |
| Stack | 634 | 635 | +1 mm |
| Head tube angle | 69.4° | 67.75 | −1.7° |
| Effective top tube | 597 | 642 | +45 mm |
| Chainstay length | 442 | not listed | |
| Wheelbase | 1117 | 1178 | +61 mm |
| BB drop | 70 | 71 | +1 mm |
| Standover | 838 | 786 | −52 mm |
| Seat tube length | 520 | 540 | +20 mm |
| Head tube length | 149 | 155 | +6 mm |
| Seat tube angle | not listed | 73.3 | |
| BB height | not listed | 293 | |
| Fork length | not listed | 460 |
Differences are the Forbidden Puritan Framekit minus the Trek Check-OUT SL. Full charts: 2027 Trek Check-OUT SL, 2026 Forbidden Puritan Framekit.
Where each sits in its class
Trek Check-OUT SLForbidden Puritan Framekit
AggressivePositionUpright
CalmSteeringQuick
PlayfulBalancePlanted
Each bike is ranked against the other gravel bikes on Quiver, on frame geometry alone. Not your hand position or ride feel.
What each ships with
The stock build of each bike's first listed trim. Parts that match are dimmed.
| Part | Trek Check-OUT SLSL | Forbidden Puritan FramekitFramekit |
|---|---|---|
| Frame | Trek OCLV | Forbidden Puritan |
| Rear shock | RockShox SIDluxe 3P Ultimate | not listed |
| Fork | not listed | RockShox Rudy |
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