2026 Transition Sentinel Alloy vs 2026 Revel Rascal Frame Kit
The M is the Revel Rascal Frame Kit size closest to your M Transition Sentinel Alloy. 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 Revel Rascal Frame Kit
Compared with the Transition Sentinel Alloy in M, the Revel Rascal Frame Kit in M places the top of the head tube 7 mm lower and 5 mm further back, relative to the bottom bracket. Its wheelbase is 34 mm shorter, which can contribute to quicker direction changes.
- Frame stack
- −7 mm
- Lower front end
- Frame reach
- −5 mm
- Shorter frame reach
- Wheelbase
- −34 mm
- Shorter: quicker to change direction
- Head angle
- +0.8°
- Steeper: sharper steering
- Chainstays
- −6 mm
- Shorter: livelier
The two frames
Only the Transition Sentinel Alloy is drawn. The Revel Rascal Frame Kit numbers we have for size M are missing the seat angle.
Geometry side by side
| Measurement | Transition Sentinel Alloy M | Revel Rascal Frame Kit M | Difference |
|---|---|---|---|
| Reach | 455 | 450mm | −5 mm |
| Stack | 621 | 614mm | −7 mm |
| Head tube angle | 64.0 | 64.8° | +0.8° |
| Seat tube angle | 73.0 | not listed | |
| Effective top tube | 577 | 605mm | +28 mm |
| Chainstay length | 442 | 436mm | −6 mm |
| Wheelbase | 1237 | 1203mm | −34 mm |
| BB drop | 25 | 31.2mm | +6 mm |
| Standover | 690 | 722mm | +32 mm |
| Seat tube length | 390 | 415mm | +25 mm |
| Head tube length | 110 | 96mm | −14 mm |
| BB height | not listed | 348mm | |
| Fork length | not listed | 566mm |
Differences are the Revel Rascal Frame Kit minus the Transition Sentinel Alloy. Full charts: 2026 Transition Sentinel Alloy, 2026 Revel Rascal Frame Kit.
Where each sits in its class
Transition Sentinel AlloyRevel Rascal Frame Kit
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 | Transition Sentinel AlloyAlloy Eagle 70 | Revel Rascal Frame KitFrame Kit |
|---|---|---|
| Frame | Transition Sentinel | Revel Rascal |
| Fork | RockShox Psylo | not listed |
| Rear shock | RockShox Super Deluxe Base | RockShox SDLX Ultimate |
| Shifter | SRAM Eagle 70 Transmission | not listed |
| Derailleur | SRAM Eagle 70 Transmission | not listed |
| Cassette | SRAM Eagle 70 Transmission | not listed |
| Chain | SRAM Eagle 70 Transmission | not listed |
| Crankset | SRAM Eagle 70 Transmission | not listed |
| Chainring | SRAM Eagle 70 Transmission | not listed |
| Wheelset | WTB ST | not listed |
| Tire | Maxxis Assegai, Maxxis Minion DHR II DD | not listed |
| Brake | SRAM Maven Base | not listed |
| Rotor | SRAM CenterLine | not listed |
| Handlebar | Race Face Chester | not listed |
| Stem | Race Face Aeffect | not listed |
| Grips | ODI Elite Flow | not listed |
| Headset | FSA No 57E | Cane Creek 40 Series |
| Dropper post | SDG Tellis Dropper | not listed |
| Saddle | SDG Bel Air 3 | not listed |
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