Polygon
Polygon Siskiu HE-B
Polygon Siskiu HE-B
Choose a size first. Not sure which? See the maker spec below.
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Polygon calls the Siskiu HE-B an e-SUV: a full-suspension bike set up for commuting on weekdays and dirt roads on weekends. It comes ready for daily use with fenders, a rear rack, front and rear lights and a dropper post. Power comes from a Shimano EP600 mid motor with 85 Nm and a 504 Wh battery integrated in the down tube.
- Motor, battery and parts as the maker states them
- Shipping cost shown at checkout, before you pay
- Secure checkout by Shopify
The maker’s specification
Polygon calls the Siskiu HE-B an e-SUV: a full-suspension bike set up for commuting on weekdays and dirt roads on weekends. It comes ready for daily use with fenders, a rear rack, front and rear lights and a dropper post. Power comes from a Shimano EP600 mid motor with 85 Nm and a 504 Wh battery integrated in the down tube.
Why riders pick it
- Up to 130 mm of air-sprung fork travel and 120 mm at the rear take the sting out of rough roads and gravel tracks.
- A 29-inch front and 27.5-inch rear Schwalbe Hurricane pairing rolls quickly on pavement and still finds grip off-road.
- The built-in rear rack carries panniers or groceries, and the fenders and lights mean it is ready for errands as delivered.
- The battery is semi-integrated, so it can be taken out for charging or maintenance; Polygon quotes up to 150 km of range.
- A dropper post lets you lower the saddle for steep sections or easy stops, then raise it again for longer seated stretches.
Specifications
- Motor: Shimano DU-EP600 mid motor, 250 W continuous rated power, 85 Nm max torque, assist to 25 kph (EU) or 20 mph (U.S. models), 3 assist modes
- Battery: Shimano BT-EN805-L, down tube integrated, 504 Wh (36 V, 14 Ah)
- Range: up to 150 km
- Sensor: Shimano EW-SS301, 760 mm cable
- Frame: ALX E-SUV, 120 mm travel, Pearl White with Black/White decals
- Fork: SR Suntour XCR 34 air, 130 mm travel, 51 mm offset, preload adjuster, low-speed rebound, lockout
- Rear shock: SR Suntour Edge Plus 2CR, 190x45 mm
- Shifter: Shimano CUES SL-U6000-R, 1x10-speed trigger
- Rear derailleur: Shimano CUES RD-U6000, 10-speed
- Crank: Shimano SM-CRE70-B, 34T
- Cassette: Shimano CUES CS-LG300-10, 10-speed, 11-48T
- Chain: KMC E-Glide 9/10/11-speed
- Pedals: alloy flat with replaceable pins
- Brakes: Shimano BR-M420 levers, Shimano hydraulic calipers
- Rotors: Shimano SM-RT64 203 front, RT-EM600 203 rear, Center Lock
- Wheelset: XL2, tubeless ready
- Rims: alloy double wall, 17.5 mm height, 35 mm width, 32H (622-35 front, 584-35 rear)
- Hubs: Shimano TC500, 15x110 mm front, 12x148 mm rear, 32H Center Lock
- Spokes: stainless 14G with 12 mm brass nipples; front NDS 294 mm / DS 296 mm, rear NDS 276 mm / DS 274 mm
- Tires: Schwalbe Hurricane, 29"x2.40" front, 27.5"x2.4" rear (622/584x62), TLE Addix
- Saddle: Polygon Void, steel rails ø7 mm
- Stem: Polygon Expert, 40 mm extension, 31.8 mm clamp, 0 mm rise
- Handlebar: Polygon Expert, 780 mm wide, 31.8 mm clamp, 50 mm rise, 9 degree sweep
- Seatpost: Tranz X JD-YSP23JL dropper, 30.9 mm; 150 mm travel and 459 mm length (S, M), 170 mm travel and 499 mm length (L, XL)
- Headset: FSA HBS-220 sealed bearing, ZS 44/28.6 | ZS 56/40
- Equipment: front and rear lights, rear carrier, fenders
Geometry and sizing
- Rider height (cm): S 153-165, M 163-175, L 173-185, XL 183-195
- Seat tube length (A): S 385, M 400, L 430, XL 450
- Seat tube angle (B): 70 on all sizes
- Effective seat tube angle (C): S 77.3, M 76.8, L 75.6, XL 76.1
- Head tube length (D): S 110, M 110, L 130, XL 130
- Head tube angle (E): S 66.8, M 67.8, L 67.8, XL 67.8
- Effective top tube (F): S 577, M 598, L 637, XL 656
- BB height (G): 353 on all sizes
- BB offset (H): 28 on all sizes
- Chainstay length (I): 457 on all sizes
- Wheelbase (J): S 1194, M 1199, L 1226, XL 1251
- Reach (K): S 439, M 454, L 474, XL 499
- Stack (L): S 612, M 616, L 635, XL 635
- Standover height (M): S 694, M 697, L 705, XL 712
Sizing
Sizing
Where the maker offers more than one size, every size is listed above and you choose one before the bike goes in your cart. The maker’s sizing or geometry, where given, is in the spec. Not sure? Send us your height and inseam before you order.
Shipping
Shipping
Dispatched in 1–2 business days, delivered in 3–5 business days within the US. The shipping cost is shown at checkout before you pay. E-bikes, their batteries and chargers follow the same estimates. See Shipping & delivery.
Returns
Returns
30-day returns on unused e-bikes in their original packaging, with battery, charger and all parts. Approved refunds are processed within 5–10 business days. Arrived damaged or defective? We arrange a replacement, repair or refund. See Returns.
E-bike rules
E-bike rules
E-bike rules vary by state and city. The motor and assist figures on this page are the maker’s own. Ask us with your state before you order if you need the classification confirmed.
Polygon Siskiu HE-B
