2026 Polygon Siskiu T T8 UDH vs 2026 Revel Rascal Frame Kit
The S is the Revel Rascal Frame Kit size closest to your S Polygon Siskiu T T8 UDH. 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 Polygon Siskiu T T8 UDH in S, the Revel Rascal Frame Kit in S places the top of the head tube 4 mm higher and 10 mm further back, relative to the bottom bracket. Its wheelbase is 6 mm shorter, which can contribute to quicker direction changes.
- Frame stack
- +4 mm
- Higher front end
- Frame reach
- −10 mm
- Shorter frame reach
- Wheelbase
- −6 mm
- Shorter: quicker to change direction
- Head angle
- +0.3°
- About the same head angle
- Chainstays
- +6 mm
- Longer: more planted
The two frames
Only the Polygon Siskiu T T8 UDH is drawn. The Revel Rascal Frame Kit numbers we have for size S are missing the seat angle.
Geometry side by side
| Measurement | Polygon Siskiu T T8 UDH S | Revel Rascal Frame Kit S | Difference |
|---|---|---|---|
| Reach | 440 | 430mm | −10 mm |
| Stack | 604 | 608mm | +4 mm |
| Head tube angle | 64.5 | 64.8° | +0.3° |
| Seat tube angle | 71.2 | not listed | |
| Effective top tube | 568 | 584mm | +16 mm |
| Chainstay length | 430 | 436mm | +6 mm |
| Wheelbase | 1186 | 1180mm | −6 mm |
| BB height | 337.5 | 348mm | +11 mm |
| Standover | 704 | 719mm | +15 mm |
| Seat tube length | 390 | 385mm | −5 mm |
| Head tube length | 89 | 90mm | +1 mm |
| BB drop | not listed | 31.2mm | |
| Fork length | not listed | 566mm |
Differences are the Revel Rascal Frame Kit minus the Polygon Siskiu T T8 UDH. Full charts: 2026 Polygon Siskiu T T8 UDH, 2026 Revel Rascal Frame Kit.
Where each sits in its class
Polygon Siskiu T T8 UDHRevel 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 | Polygon Siskiu T T8 UDHT8 with UDH | Revel Rascal Frame KitFrame Kit |
|---|---|---|
| Frame | Polygon ALX Trail | Revel Rascal |
| Fork | Fox 34 Performance | not listed |
| Rear shock | Fox Float | RockShox SDLX Ultimate |
| Shifter | Shimano SLX M7100 | not listed |
| Derailleur | Shimano SLX M7100 | not listed |
| Cassette | Shimano SLX M7100 | not listed |
| Chain | KMC X-12 | not listed |
| Crankset | Shimano Deore M6120 | not listed |
| Wheelset | Polygon MT6 | not listed |
| Tire | Maxxis Dissector | not listed |
| Brake | Shimano Deore M4100 | not listed |
| Rotor | Shimano SM-RT54 | not listed |
| Handlebar | Polygon EXPERT | not listed |
| Stem | Polygon EXPERT | not listed |
| Headset | FSA No 57E | Cane Creek 40 Series |
| Dropper post | X-Fusion MANIC LC | not listed |
| Saddle | Linc XTENT | not listed |
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