2026 Polygon Siskiu T T6 UDH vs 2026 Revel Rascal Frame Kit
The XL is the Revel Rascal Frame Kit size closest to your XL Polygon Siskiu T T6 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 T6 UDH in XL, the Revel Rascal Frame Kit in XL places the top of the head tube 3 mm higher and 8 mm further back, relative to the bottom bracket. Its wheelbase is 6 mm shorter, which can contribute to quicker direction changes.
- Frame stack
- +3 mm
- Higher front end
- Frame reach
- −8 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 T6 UDH is drawn. The Revel Rascal Frame Kit numbers we have for size XL are missing the seat angle.
Geometry side by side
| Measurement | Polygon Siskiu T T6 UDH XL | Revel Rascal Frame Kit XL | Difference |
|---|---|---|---|
| Reach | 505 | 497mm | −8 mm |
| Stack | 636 | 639mm | +3 mm |
| Head tube angle | 64.5 | 64.8° | +0.3° |
| Seat tube angle | 71.2 | not listed | |
| Effective top tube | 644 | 652mm | +8 mm |
| Chainstay length | 430 | 436mm | +6 mm |
| Wheelbase | 1267 | 1261mm | −6 mm |
| BB height | 337.5 | 348mm | +11 mm |
| Standover | 723 | 744mm | +21 mm |
| Seat tube length | 430 | 475mm | +45 mm |
| Head tube length | 125 | 115mm | −10 mm |
| BB drop | not listed | 31.2mm | |
| Fork length | not listed | 566mm |
Differences are the Revel Rascal Frame Kit minus the Polygon Siskiu T T6 UDH. Full charts: 2026 Polygon Siskiu T T6 UDH, 2026 Revel Rascal Frame Kit.
Where each sits in its class
Polygon Siskiu T T6 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 T6 UDHT6 with UDH | Revel Rascal Frame KitFrame Kit |
|---|---|---|
| Frame | Polygon ALX Trail | Revel Rascal |
| Fork | RockShox Recon Silver TK | not listed |
| Rear shock | X-Fusion O2 Pro | RockShox SDLX Ultimate |
| Shifter | Shimano CUES | not listed |
| Derailleur | Shimano CUES | not listed |
| Cassette | Shimano CUES | not listed |
| Chain | KMC XGlide | not listed |
| Crankset | Samox RAC61C | not listed |
| Pedals | Polygon Expert | not listed |
| Wheelset | Polygon MT6 | not listed |
| Tire | Maxxis Dissector | not listed |
| Brake | Shimano MT200 | not listed |
| Rotor | Shimano SM-RT10 | 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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