2026 Forbidden Puritan Framekit vs 2025 Salsa Tributary C
The M is the Salsa Tributary C size closest to your S3 Forbidden Puritan Framekit. We match frame stack and reach. This is a geometry comparison, not a fit recommendation; stem, spacers, handlebars and saddle setup also affect your riding position.
What changes on the Salsa Tributary C
Compared with the Forbidden Puritan Framekit in S3, the Salsa Tributary C in M places the top of the head tube 4 mm higher and 14 mm further back, relative to the bottom bracket. Its wheelbase is 5 mm longer, which can contribute to stability at speed.
- Frame stack
- +4 mm
- Higher front end
- Frame reach
- −14 mm
- Shorter frame reach
- Wheelbase
- +5 mm
- Longer: steadier at speed
- Head angle
- −0.8°
- 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 Forbidden Puritan Framekit numbers we have for size S3 are missing the chainstay length. The numbers below still compare.
Geometry side by side
| Measurement | Forbidden Puritan Framekit S3 | Salsa Tributary C M | Difference |
|---|---|---|---|
| Reach | 432 | 417.6 | −14 mm |
| Stack | 621 | 624.8 | +4 mm |
| Head tube angle | 67.75 | 67.0 | −0.8° |
| Seat tube angle | 73.3 | 75.0 | +1.7° |
| Effective top tube | 618 | 585 | −33 mm |
| Wheelbase | 1143 | 1148.0 | +5 mm |
| BB drop | 71 | 70 | −1 mm |
| BB height | 293 | 303 | +10 mm |
| Standover | 769 | 775.0 | +6 mm |
| Seat tube length | 520 | 460 | −60 mm |
| Fork length | 460 | 498.4 | +38 mm |
| Head tube length | 140 | 125 | −15 mm |
| Chainstay length | not listed | 445 |
Differences are the Salsa Tributary C minus the Forbidden Puritan Framekit. Full charts: 2026 Forbidden Puritan Framekit, 2025 Salsa Tributary C.
Where each sits in its class
Forbidden Puritan FramekitSalsa Tributary C
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 | Forbidden Puritan FramekitFramekit | Salsa Tributary CC GRX 820 |
|---|---|---|
| Frame | Forbidden Puritan | Salsa Tributary |
| Fork | RockShox Rudy | not listed |
| Shifter | not listed | Shimano GRX RX820 |
| Derailleur | not listed | Shimano GRX RX822 |
| Cassette | not listed | Shimano Deore M6100 |
| Chain | not listed | Shimano Deore M6100 |
| Crankset | not listed | FSA CK-762 |
| Motor | not listed | Bosch Performance Line Speed |
| Battery | not listed | Bosch Powertube |
| Tire | not listed | Teravail Ehline |
| Rim | not listed | WTB ST i27 |
| Brake | not listed | Shimano GRX RX820 |
| Rotor | not listed | Shimano SM-RT64 |
| Handlebar | not listed | Salsa Cowchipper |
| Stem | not listed | Salsa Guide Trail |
| Saddle | not listed | WTB SL8 |
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