2026 Forbidden Heathen Framekit vs 2027 Trek Fuel LX 9.9 Gen 7
The M is the Trek Fuel LX 9.9 Gen 7 size closest to your S2 Forbidden Heathen 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 Trek Fuel LX 9.9 Gen 7
Compared with the Forbidden Heathen Framekit in S2, the Trek Fuel LX 9.9 Gen 7 in M places the top of the head tube 3 mm higher and 7 mm further back, relative to the bottom bracket. Its wheelbase is 44 mm longer, which can contribute to stability at speed.
- Frame stack
- +3 mm
- Higher front end
- Frame reach
- −7 mm
- Shorter frame reach
- Wheelbase
- +44 mm
- Longer: steadier at speed
- Head angle
- −0.6°
- 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 Heathen Framekit numbers we have for size S2 are missing the chainstay length. The numbers below still compare.
Geometry side by side
| Measurement | Forbidden Heathen Framekit S2 | Trek Fuel LX 9.9 Gen 7 M | Difference |
|---|---|---|---|
| Reach | 455 | 448 | −7 mm |
| Stack | 630 | 633 | +3 mm |
| Head tube angle | 64 | 63.4° | −0.6° |
| Seat tube angle | 76 | 77.2° | +1.2° |
| Effective top tube | 612 | 586 | −26 mm |
| Wheelbase | 1192.8 | 1237 | +44 mm |
| BB height | 301 | 347 | +46 mm |
| Standover | 728 | 752 | +24 mm |
| Seat tube length | 420 | 400 | −20 mm |
| Fork length | 541 | not listed | |
| Head tube length | 100 | 110 | +10 mm |
| Chainstay length | not listed | 437 | |
| BB drop | not listed | 27 |
Differences are the Trek Fuel LX 9.9 Gen 7 minus the Forbidden Heathen Framekit. Full charts: 2026 Forbidden Heathen Framekit, 2027 Trek Fuel LX 9.9 Gen 7.
Where each sits in its class
Forbidden Heathen FramekitTrek Fuel LX 9.9 Gen 7
Each bike is ranked against the other trail 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 Heathen Framekit | Trek Fuel LX 9.9 Gen 79.9 X0 AXS Gen 7 |
|---|---|---|
| Fork | not listed | RockShox ZEB B1 Ultimate |
| Rear shock | not listed | RockShox Vivid D1 Ultimate |
| Shifter | not listed | SRAM Pod Controller |
| Derailleur | not listed | SRAM X0 Eagle AXS |
| Cassette | not listed | SRAM X0 Eagle Transmission |
| Chain | not listed | SRAM X0 Eagle |
| Crankset | not listed | SRAM X0 Eagle |
| Bottom bracket | not listed | SRAM DUB |
| Battery | not listed | SRAM AXS |
| Wheelset | not listed | Bontrager Line Pro 30 |
| Tire | not listed | Maxxis Minion DHR II |
| Brake | not listed | SRAM Maven |
| Rotor | not listed | SRAM HS2 |
| Handlebar | not listed | Race Face ERA |
| Stem | not listed | Race Face Turbine |
| Grips | not listed | Trek Line Elite |
| Seatpost | not listed | Fox Transfer Neo |
| Saddle | not listed | Trek Aeolus |
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