
Velopedia Bicycle Archive
2024 Polygon Siskiu HE (Shimano)
Electric-assist bicycle from the Velopedia specification archive.
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What Velopedia knows
- Model year
- 2024
- Category
- Mountain
- Original MSRP
- $2,999.00
- Sizes
- S, M, L, XL
- Colors
- White
- Geometry
- 8 manufacturer sizes · Geometry context
- Record coverage
- 23 preserved details · archived image · original MSRP · preserved geometry
- Archive ID
- 900001825
Frameset
| Frame Construction | ALX E-SUV 120mm Travel |
|---|---|
| Frame Material | Aluminum |
| Fork | SR Suntour XCR 34, Air Spring,130mm Travel, Offset: 51mm, W/ Preload Adjuster,LOW Speed Rebound,W/ Lock OUT |
| Rear Shock | SR Suntour Edge Plus 2CR, E2E: 190x45mm |
Drivetrain
| Shifters | Shimano Cues SL-U6000-R, 1X10-Speed Trigger |
|---|---|
| Rear Derailleur | Shimano Cues RD-U6000 10-speed |
| Crankset | Shimano SM-CRE70-B 34T |
| Cassette | Shimano Cues CS-LG300-10 10-speed 11-48T Cassette |
| Chain | KMC Eglide 9/10/11-speed |
| Pedals | Alloy Flat W/ Replaceable PIN |
Brakes
| Brakes | Shimano Hydraulic; Levers: Shimano BR-M420; Rotors: Shimano F: SM-RT64 203 CL / R: RT-EM600 203 CL |
|---|
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 | Polygon Expert, EXT: 40mm, BB: 31.8mm, R/D: 0mm |
| Saddle | Polygon Void, 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 TC500 15x110mm 32H CL / R: Shimano TC500 12x148mm 32H CL for Cassette |
|---|---|
| Wheels | XL2 Tubeless Ready |
| Rims | F: Alloy Double Wall H:17.5mm W: 35mm 622-35 32H for Tyre 622-54/76 TL Ready / R: Alloy Double Wall H:17.5mm W: 35mm 584-35 32H for Tyre 622-54/76 TL Ready |
| Front Tire | Schwalbe Hurricane F: 29"X2.40" / R: 27.5"X2.4" 622/584x62 Allround Tire TLE Addix |
| Rear Tire | Schwalbe Hurricane F: 29"X2.40" / R: 27.5"X2.4" 622/584x62 Allround Tire TLE Addix |
E-bike System
| Motor | Shimano DU-EP600 MID Motor 45 KPH / 28MPH, Continuous Rated Power 250WATT, Maximum Torque 85Nm |
|---|---|
| Battery | Shimano BT-EN805-L for Down Tube Integrated - 504Wh (36V, 14Ah) |
Size-specific frame data
Geometry
Manufacturer-published geometry normalized for consistent archival comparison. Effective top tube and reach remain separate measurements because they describe different aspects of fit.
| 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 |
Geometry source: Polygon first-party metric geometry table ↗ Measurements can vary by configuration, wheel size, or flip-chip position where noted by the manufacturer.
Geometry tools
Analyze a published size
The manufacturer publishes more than one geometry configuration. Velopedia analyzes each labeled state separately while treating them as one chassis in archive comparisons.
S geometry
Archive context: The seat angle of 77.3° sits toward the steeper end. The chainstay of 457 mm sits somewhat longer than typical. Its reach of 439 mm sits somewhat longer than typical.
Compared with 97 distinct electric-assist geometries in the Small-equivalent size cohort from model years 2022–2026 in the Velopedia archive.Archive context: The chainstay of 460 mm sits toward the longer rear-center end. Its reach of 430 mm sits somewhat longer than typical. The seat angle of 76.4° sits close to the middle of the group.
Compared with 97 distinct electric-assist geometries in the Small-equivalent size cohort from model years 2022–2026 in the Velopedia archive.M geometry
Archive context: The chainstay of 457 mm sits somewhat longer than typical. Its bottom-bracket drop of 28 mm sits somewhat shallower than typical. Its stack of 616 mm sits somewhat lower than typical.
Compared with 110 distinct electric-assist geometries in the Medium-equivalent size cohort from model years 2022–2026 in the Velopedia archive.Archive context: The chainstay of 460 mm sits somewhat longer than typical. Its stack of 623 mm sits close to the middle of the group. The seat angle of 76° sits close to the middle of the group.
Compared with 110 distinct electric-assist geometries in the Medium-equivalent size cohort from model years 2022–2026 in the Velopedia archive.L geometry
Archive context: The chainstay of 457 mm sits somewhat longer than typical. Its bottom-bracket drop of 28 mm sits somewhat shallower than typical. Its stack of 635 mm sits somewhat lower than typical.
Compared with 102 distinct electric-assist geometries in the Large-equivalent size cohort from model years 2022–2026 in the Velopedia archive.Archive context: The chainstay of 460 mm sits somewhat longer than typical. The head angle of 67° sits close to the middle of the group. The seat angle of 75.6° sits close to the middle of the group.
Compared with 102 distinct electric-assist geometries in the Large-equivalent size cohort from model years 2022–2026 in the Velopedia archive.XL geometry
Archive context: Its stack of 635 mm sits toward the lower end. The chainstay of 457 mm sits toward the longer rear-center end. The head angle of 67.8° sits somewhat steeper than typical.
Compared with 84 distinct electric-assist geometries in the XL-equivalent size cohort from model years 2022–2026 in the Velopedia archive.Archive context: The chainstay of 460 mm sits toward the longer rear-center end. Its stack of 641 mm sits somewhat lower than typical. The head angle of 67° sits somewhat steeper than typical.
Compared with 84 distinct electric-assist geometries in the XL-equivalent size cohort from model years 2022–2026 in the Velopedia archive.Parts & serviceability
Find replacement parts
More qualified parts (1)
Searches use the archived manufacturer specification, not the components currently installed on a particular bicycle. Confirm the exact model, size and fit before ordering. As an Amazon Associate I earn from qualifying purchases. Velopedia may also earn from qualifying eBay purchases. Commercial relationships do not influence Archive specifications or analysis.
Used-bike inspection
If you’re buying this bike used
Before any test ride: both brakes should stop the bike firmly and release cleanly; both wheels should run true and be securely attached; tires should have no casing damage; and the headset, handlebar, stem, cranks and pedals should have no looseness or play.
Follow the full used-bike inspection order →- FrameLook closely for dents and hairline cracks around welds, the head tube and bottom-bracket area. Cosmetic scratches matter less than a change in shape or a crack line.Inspect the frame and fork →
- BrakesTest each brake separately and confirm it stops firmly and releases cleanly. Inspect the pads and braking surfaces for wear or contamination, and check the cables or hoses for damage.Inspect the brakes →
- E-bike systemConfirm the main battery charges with the correct charger, locks securely into its mount and has no case damage, swelling, corrosion or overheating marks. Power the bike on from cold, test every assist mode and ask for available battery-health and diagnostic records.Check the battery and electronics →
- SuspensionAsk when the fork and shock were last serviced. Check the stanchions for damage, look for oil at the seals, cycle both units through their travel and test the suspension pivots for play.Evaluate the suspension →
- Wheels & tiresSpin both wheels and watch the rims for side-to-side or vertical movement. Check for dents, cracks, loose or uneven spokes and hub play, then inspect both tire casings for cuts, cracking or exposed threads. If it is set up tubeless, confirm both tires hold pressure and ask when the sealant was last refreshed.Check wheels and tires →
Bike-specific inspection checklist 27 checks based on 7 archived component groups Open checklistClose checklist
This checklist uses the archived equipment for this bike. It cannot confirm the condition, service history or later component changes of the example in front of you.
Identity and fit
Follow the full used-bike inspection order →Archived: 2024 Polygon Siskiu HE (Shimano) · Electric-assist · Published sizes: S, M, L, XL
Frame and fork
Inspect the frame and fork →Archived: Frame: ALX E-SUV 120mm TRAVEL · Fork: SR SUNTOUR XCR 34, AIR SPRING,130mm TRAVEL, OFFSET: 51mm, W/ PRELOAD ADJUSTER,LOW SPEED REBOUND,W/ LOCK OUT
Suspension
Evaluate the suspension →Archived: Fork: SR SUNTOUR XCR 34, AIR SPRING,130mm TRAVEL, OFFSET: 51mm, W/ PRELOAD ADJUSTER,LOW SPEED REBOUND,W/ LOCK OUT · Rear shock: SR SUNTOUR EDGE PLUS 2CR, E2E: 190x45mm
Drivetrain
Check drivetrain wear →Archived: Shifters: SHIMANO CUES SL-U6000-R, 1X10-SPEED TRIGGER · Rear derailleur: SHIMANO CUES RD-U6000 10-SPEED · Crankset: SHIMANO SM-CRE70-B 34T · Cassette: SHIMANO CUES CS-LG300-10 10-SPEED 11-48T CASSETTE · Chain: KMC EGLIDE 9/10/11-SPEED
Brakes
Inspect the brakes →Archived: Brakes: SHIMANO HYDRAULIC; Levers: SHIMANO BR-M420; Rotors: SHIMANO F: SM-RT64 203 CL / R: RT-EM600 203 CL
Wheels and tires
Check wheels and tires →Archived: Wheels: XL2 TUBELESS READY · Rims: F: ALLOY DOUBLE WALL H:17.5mm W: 35mm 622-35 32H FOR TYRE 622-54/76 TL READY / R: ALLOY DOUBLE WALL H:17.5mm W: 35mm 584-35 32H FOR TYRE 622-54/76 TL READY · Hubs: F: SHIMANO TC500 15x110mm 32H CL / R: SHIMANO 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 · Rear tire: SCHWALBE HURRICANE F: 29"x2.40" / R: 27.5"x2.4" 622/584x62 ALLROUND TIRE TLE ADDIX
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: POLYGON EXPERT, EXT: 40mm, BB: 31.8mm, R/D: 0mm · Seatpost: TRANZ X JD-YSP23JL 150mm (S, M) / 170mm (L, XL) TRAVEL, DxL: 30.9 x 459mm (S, M) / 499mm (L, XL) · Saddle: POLYGON VOID, STEEL ø7mm · Pedals: ALLOY FLAT W/ REPLACEABLE PIN
E-bike system
Check the battery and electronics →Archived: Motor: SHIMANO DU-EP600 MID MOTOR 45 kph / 28mph, CONTINUOUS RATED POWER 250Watt, MAXIMUM TORQUE 85Nm · Battery: SHIMANO BT-EN805-L FOR DOWN TUBE INTEGRATED - 504Wh (36V, 14Ah)
Before and during the test ride
Follow the full used-bike inspection order →Build relationships are limited to the archived manufacturer specifications. Confirm exact fit and standards before ordering parts or performing service.
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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.




