MODEL NAME 2021 Polygon Siskiu D6 FRAME ALX XC Trail 6061 Aluminum Frame, 120mm Travel, Internal Routed Gear & Dropper Cables, Tapered Headtube, 73mm Threaded Boost BB, 148x12mm Boost Thru-Axle FORK SR Suntour XCR 32, Air Spring, 120mm Travel (27.5" & 29"), Rebound & Compression Adjuster, 15x100mm Thru-Axle REAR SHOCK X-Fusion O2 Pro RL, Air Spring, Rebound & Compression Adjuster, E2E 190x45mm, M8x25mm Hardware HANDLEBAR Entity Sport, Alloy, 12mm Rise, 6 Degree Back Sweep, 31.8mm STEM Entity Sport, Alloy, 0 Degree HEADSET Threadless Zero Stack Headset, ZS 44/28.6 | ZS 56/40 SADDLE Entity Void Saddle SEATPOST TranzX JD-YSP23JL Dropper Post, Zero Offset, 30.9mm, Remote Lever CRANKSET Shimano Deore FC-MT5100, 32T, 10-Speed, Hollowtech II, Boost CHAIN KMC X10, 10-Speed PEDALS Flat Alloy BOTTOM BRACKET Shimano BSA Threaded 73mm CASSETTE SPROCKET Shimano CS-M4100, 10-46T, 10-Speed REAR DERAILLEUR Shimano Deore RD-M5120, 10-Speed, Direct Mount SHIFTING LEVER Shimano SL-M4100 1x10-Speed Trigger BRAKE Shimano BR-M201 Hydraulic ROTOR Shimano SM-RT10 Centerlock, F: 180mm / R: 160mm TIRE Entity Spiderbait 27.5x2.25" / 29x2.25" ** RIM Entity X15 Doublewall Disc 32H, 25mm Internal Width, Tubeless Ready ** FRONT HUB Shimano HB-MT400, Thru Axle 15x100mm, 32H Center-Lock REAR HUB Shimano FH-MT400, Thru Axle 12x148mm, 32H Center-Lock SPOKES Entity Stainless, Brass Nipple SPOKE LENGTH F: 270mm R:272mm (27.5") / F: 290mm R: 292mm (29") WEIGHT 37.57 lbs (27.5" M) *Not tubeless compatible **Tubeless tape and valve sold separately