Polygon Siskiu Complete Bike
What the checker saysnot checked
No fit check runs on a complete bike, and we will not pretend one does. A complete bike does not fill a slot in the builder, so the checker has no counterpart to compare it against and has never produced a single sentence about one.
$2,199.00 to $2,399.00 MSRP
What the maker states
- Wheel configs
- Frame takes 29" wheels
- Travel
- Frame travel 135 mm (maker-stated) (on 1 of 2 variants); Frame travel 140 mm (maker-stated) (on 1 of 2 variants)
- Shock eye
- Shock eye-to-eye 210 mm
- Shock stroke
- 55 mm
- Shock mount
- Standard eyelet
- Maximum fork travel
- Approved for a fork up to 150 mm of travel
A value shown as a set or a range differs between this model’s variants and is never one variant’s spec.
The maker’s build kit
The maker’s own component list, taken from the page linked below. Nothing on this list has been fit checked as a set.
Siskiu T8 with UDH (2026)
16 of 22 parts on this list are verified rows here and are linked.
- Frame: Polygon Siskiu T8 (29)
- Fork: Fox 34 Rhythm GRIP 140
- Rear Shock: Fox Float DPS Performance "Special Tuning" (210x55) (not a verified row in this catalog)
- Front Wheel: Polygon MT6 / Shimano HB-TC500 (29, front) (not a verified row in this catalog)
- Rear Wheel: Polygon MT6 / Shimano FH-TC500 (29, rear, MicroSpline) (not a verified row in this catalog)
- Front Tire: Maxxis Dissector 29x2.4 EXO 3C MaxxTerra
- Rear Tire: Maxxis Dissector 29x2.4 EXO 3C MaxxTerra
- Shifter: Shimano SLX M7100
- Rear Derailleur: Shimano SLX M7100 SGS
- Cassette: Shimano CS-M7100 10-51
- Chain: KMC X12 12-speed
- Crankset: Shimano Deore M6120 Boost
- Bottom Bracket: Shimano BB-MT501
- Front Brake: Shimano BR-MT420 (4-piston, budget Deore/Alivio tier)
- Rear Brake: Shimano BR-MT420 (4-piston, budget Deore/Alivio tier)
- Front Rotor: Shimano SM-RT54 180mm (CL)
- Rear Rotor: Shimano SM-RT54 180mm (CL)
- Handlebar: Polygon Expert (780mm, 30mm rise) (not a verified row in this catalog)
- Stem: Polygon Expert (35mm)
- Dropper Post: X-Fusion Manic LC
- Saddle: Entity LINC Xtent (CrMo rails) (not a verified row in this catalog)
- Pedals: Polygon OE Alloy Flat Pedal (not a verified row in this catalog)
Siskiu T7 with UDH (2026)
16 of 21 parts on this list are verified rows here and are linked.
- Frame: Polygon Siskiu T7 (29)
- Fork: RockShox Recon Silver RL 140 (not a verified row in this catalog)
- Rear Shock: RockShox Deluxe Select+ (210x55)
- Front Wheel: Polygon MT6 / Shimano HB-TC500 (29, front) (not a verified row in this catalog)
- Rear Wheel: Polygon MT6 / Shimano FH-TC500 (29, rear, MicroSpline) (not a verified row in this catalog)
- Front Tire: Maxxis Dissector 29x2.4 EXO 3C MaxxTerra
- Rear Tire: Maxxis Dissector 29x2.4 EXO 3C MaxxTerra
- Shifter: Shimano Deore M6100
- Rear Derailleur: Shimano Deore M6100 SGS
- Cassette: Shimano CS-M6100 10-51
- Chain: KMC X12 12-speed
- Crankset: Shimano Deore M6120 Boost
- Bottom Bracket: Shimano BB-MT501
- Front Brake: Shimano BR-MT420 (4-piston, budget Deore/Alivio tier)
- Rear Brake: Shimano BR-MT420 (4-piston, budget Deore/Alivio tier)
- Front Rotor: Shimano SM-RT54 180mm (CL)
- Rear Rotor: Shimano SM-RT54 180mm (CL)
- Handlebar: Polygon Expert (780mm, 30mm rise) (not a verified row in this catalog)
- Stem: Polygon Expert (35mm)
- Dropper Post: X-Fusion Manic LC
- Saddle: Entity LINC Xtent (CrMo rails) (not a verified row in this catalog)
2 verified variants
| Variant | Price (MSRP) | Weight | Source | Last checked | Build |
|---|---|---|---|---|---|
| Siskiu T8 with UDH (2026) | $2,399.00 | not stated | maker’s page | 2026-07-15 | Build with this |
| Siskiu T7 with UDH (2026) | $2,199.00 | not stated | maker’s page | 2026-07-15 | Build with this |
What the maker states1 not published
1 further field the checker looks for is not published by Polygon, so we leave it blank rather than estimate it, and that check stays silent on this complete bike. It is rotor adapter documented. Each is recorded as “not stated by the maker (not checked)”.
Source: each variant links the maker’s own page in the table above. Last checked 2026-07-15.