Velopedia Bicycle Archive
2024 Polygon Siskiu HE (Bosch)
Original specifications: geometry for 4 published sizes.
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At a glance
Archive #900001827- Model year
- 2024
- Category
- Mountain
- Original MSRP
- $4,199.00
- Sizes
- S, M, L, XL
- Colors
- Purple
- Geometry
- 4 manufacturer sizes
- In this record
- 23 specifications · archived image · original MSRP · geometry
Original buildAluminum
Frameset
| Frame Construction | ALX E-SUV 120mm Travel |
|---|---|
| Frame Material | Aluminum |
| Fork | SR Suntour Mobie 36 Boost, Air Spring, Equalizer,130mm Travel, Offset: 44mm, 3CR-PCS |
| Rear Shock | SR Suntour Edge Plus 2CR, E2E: 190x45mm |
Drivetrain
| Shifters | SRAM SX Eagle, 1X12-Speed Trigger |
|---|---|
| Rear Derailleur | SRAM NX Eagle 12-speed |
| Crankset | SRAM X-Sync 2 38T |
| Cassette | SRAM CS-PG-1210-A1 Eagle 12-speed 11-50T Cassette |
| Chain | SRAM SX Eagle 12-speed |
| Pedals | Alloy Flat W/ Replaceable PIN |
Brakes
| Brakes | SRAM Code-R Hydraulic; Levers: SRAM Code R; Rotors: SRAM Centerline Centerlock 200mm |
|---|
Cockpit & Contact Points
| Headset | FSA HBS-220 W/ Sealed Bearing, ZS 44/28.6 | ZS 56/40 |
|---|---|
| Handlebar | POLYGON EXPERT, W: 780mm, BB: 31.8mm, R/D: 50mm, B:9degree |
| Stem | Alloy Stem, EXT: 60mm, BB: 31.8mm, R/D: 5mm |
| Saddle | Ease, Steel Ø7mm |
| Seatpost | Tranz X JD-YSP23JL 150mm (S, M) / 170mm (L, XL) Travel, DXL: 30.9 X 459mm (S, M) / 499mm (L, XL) |
Wheels & Tires
| Hubs | F: Shimano HB-TC500 15x110mm 32H CL / R: Shimano FH-TC500 12x148mm 32H CL for Cassette |
|---|---|
| Wheels | MT9 Tubeless Ready |
| Rims | F: Alloy Double Wall FV H:18mm 622x36 32H for Tyre 622-54/76 W/ Tubeless Tape / R: Alloy Double Wall FV H:18mm 584x36 32H for Tyre 584-54/76 W/ Tubeless Tape |
| Front Tire | Schwalbe Hurricane F: 29"X2.40" / R: 27.5"X2.4" 622/584x62 Allround Tire TLE Addix, MAX: 29"X2.60" |
| Rear Tire | Schwalbe Hurricane F: 29"X2.40" / R: 27.5"X2.4" 622/584x62 Allround Tire TLE Addix, MAX: 29"X2.60" |
E-bike System
| Motor | Bosch Performance Line CX |
|---|---|
| Battery | Bosch Power Tube 625 Horizontal |
No specifications match. Try a component name or clear your search.
Geometry
Frame measurements by size.
Frame diagram
Select an available measurement to locate it on the frame.
All geometry measurements8 size / setup combinations · 13 measurements
| Measurement | S · High | M · High | L · High | XL · High | S · Low | M · Low | L · Low | XL · Low |
|---|---|---|---|---|---|---|---|---|
| Seat tube | 385 mm | 400 mm | 430 mm | 450 mm | 385 mm | 400 mm | 430 mm | 450 mm |
| Effective top tube | 577 mm | 598 mm | 637 mm | 656 mm | 579 mm | 600 mm | 630 mm | 658 mm |
| Head tube | 110 mm | 110 mm | 130 mm | 130 mm | 110 mm | 110 mm | 130 mm | 130 mm |
| Head-tube angle | 66.8° | 67.8° | 67.8° | 67.8° | 66° | 67° | 67° | 67° |
| Seat-tube angle | 77.3° | 76.8° | 75.6° | 76.1° | 76.4° | 76° | 75.6° | 75.3° |
| Actual seat-tube angle | 70° | 70° | 70° | 70° | 70° | 70° | 70° | 70° |
| Chainstay / rear center | 457 mm | 457 mm | 457 mm | 457 mm | 460 mm | 460 mm | 460 mm | 460 mm |
| Wheelbase | 1194 mm | 1199 mm | 1226 mm | 1251 mm | 1196 mm | 1201 mm | 1228 mm | 1253 mm |
| Bottom-bracket drop | 28 mm | 28 mm | 28 mm | 28 mm | 39 mm | 39 mm | 39 mm | 39 mm |
| Bottom-bracket height | 353 mm | 353 mm | 353 mm | 353 mm | 343 mm | 343 mm | 343 mm | 343 mm |
| Reach | 439 mm | 454 mm | 474 mm | 499 mm | 430 mm | 445 mm | 465 mm | 490 mm |
| Stack | 612 mm | 616 mm | 635 mm | 635 mm | 618 mm | 623 mm | 641 mm | 641 mm |
| Standover height | 694 mm | 697 mm | 705 mm | 712 mm | 684 mm | 686 mm | 694 mm | 700 mm |
Dimensions as recorded.
Gearing
Lower gears help on climbs. Higher gears suit higher speeds.
RPM = pedal turns per minute.
Speed unavailable: wheel or tire size is missing or unclear.
Add your rear tire size to calculate speedHow it works
Ratio = front teeth ÷ rear teeth. Hub gears also include the hub’s internal ratio. A 400% range means the highest ratio is four times the lowest.
Speeds are estimates from tire size and pedal cadence. Actual speeds vary.
Try your current gearingChanged tires or gears? Calculate your setup.
Your changes apply to this calculation. The archived build stays unchanged.
Gearing results
| Measure | Original | Your setup |
|---|---|---|
| Lowest ratio | — | — |
| Highest ratio | — | — |
| Total range | — | — |
| Lowest-gear speed | — | — |
| Highest-gear speed | — | — |
Speeds are estimates. These calculations do not establish component compatibility or available tire clearance.
Parts & serviceability
Find replacement parts

SRAM GX Eagle 12-Speed Chain Silver, 126 links
Replacement option
ZS 44/28.6 | ZS 56/40

Cane Creek 40-Series Headset Black, ZS44/28.6, ZS56/40
Replacement option
More parts (3)Fewer parts
1X12-SPEED TRIGGER
Based on the original build. Check fit and installed parts before ordering. Affiliate links may earn Velopedia a commission. As an Amazon Associate I earn from qualifying purchases.
Parts and service referenceQuick reference before buying parts
Archived specifications for reference. Check the fitted parts before ordering.
- Front tire
- SCHWALBE HURRICANE F: 29"x2.40" / R: 27.5"x2.4" 622/584x62 ALLROUND TIRE TLE ADDIX, MAX: 29"x2.60"
- Rear tire
- SCHWALBE HURRICANE F: 29"x2.40" / R: 27.5"x2.4" 622/584x62 ALLROUND TIRE TLE ADDIX, MAX: 29"x2.60"
- Drivetrain
- 12-speed
Equipment inspection checks 18 checks based on 7 archived component groups Open equipment checksClose equipment checks
Checks selected from the archived equipment. Confirm what is fitted today. This is not a complete safety inspection; use the full inspection guide before test riding.
Full used-bike inspection guide →
Frame and fork
Inspect the frame and fork →Archived: Frame: ALX E-SUV 120mm TRAVEL · Fork: SR SUNTOUR MOBIE 36 BOOST, AIR SPRING, EQUALIZER,130mm TRAVEL, OFFSET: 44mm, 3CR-PCS
Suspension
Evaluate the suspension →Archived: Fork: SR SUNTOUR MOBIE 36 BOOST, AIR SPRING, EQUALIZER,130mm TRAVEL, OFFSET: 44mm, 3CR-PCS · Rear shock: SR SUNTOUR EDGE PLUS 2CR, E2E: 190x45mm
Drivetrain
Check drivetrain wear →Archived: Shifters: SRAM SX EAGLE, 1X12-SPEED TRIGGER · Rear derailleur: SRAM NX EAGLE 12-SPEED · Crankset: SRAM X-SYNC 2 38T · Cassette: SRAM CS-PG-1210-A1 EAGLE 12-SPEED 11-50T CASSETTE · Chain: SRAM SX EAGLE 12-SPEED
Brakes
Inspect the brakes →Archived: Brakes: SRAM CODE-R HYDRAULIC; Levers: SRAM CODE R; Rotors: SRAM CENTERLINE CENTERLOCK 200MM
Wheels and tires
Check wheels and tires →Archived: Wheels: MT9 TUBELESS READY · Rims: F: ALLOY DOUBLE WALL FV H:18mm 622x36 32H FOR TYRE 622-54/76 W/ TUBELESS TAPE / R: ALLOY DOUBLE WALL FV H:18mm 584x36 32H FOR TYRE 584-54/76 W/ TUBELESS TAPE · Hubs: F: SHIMANO HB-TC500 15x110mm 32H CL / R: SHIMANO FH-TC500 12x148mm 32H CL FOR CASSETTE · Front tire: SCHWALBE HURRICANE F: 29"x2.40" / R: 27.5"x2.4" 622/584x62 ALLROUND TIRE TLE ADDIX, MAX: 29"x2.60" · Rear tire: SCHWALBE HURRICANE F: 29"x2.40" / R: 27.5"x2.4" 622/584x62 ALLROUND TIRE TLE ADDIX, MAX: 29"x2.60"
Controls and contact points
Archived: Headset: FSA HBS-220 W/ SEALED BEARING, ZS 44/28.6 | ZS 56/40 · Handlebar: POLYGON EXPERT, W: 780mm, BB: 31.8mm, R/D: 50mm, B:9degree · Stem: ALLOY STEM, EXT: 60mm, BB: 31.8mm, R/D: 5MM · Seatpost: TRANZ X JD-YSP23JL 150mm (S, M) / 170mm (L, XL) TRAVEL, DxL: 30.9 x 459mm (S, M) / 499mm (L, XL) · Saddle: EASE, STEEL ø7mm · Pedals: ALLOY FLAT W/ REPLACEABLE PIN
E-bike system
Check the battery and electronics →Archived: Motor: BOSCH PERFORMANCE LINE CX · Battery: BOSCH POWER TUBE 625 HORIZONTAL
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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.





