{"product_id":"2025-polygon-siskiu-t8-udh-frameset","title":"Polygon Siskiu T UDH - Frameset","description":"\u003ch3\u003eColor Options\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eMatte Space Grey \/ Black\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp\u003eDesigned for progressive trail riding, technical descents, and efficient climbing, the \u003cb\u003e2025 Polygon Siskiu T UDH Frameset*\u003c\/b\u003e updates Polygon’s benchmark mid-travel trail platform with a modern SRAM Universal Derailleur Hanger (UDH) rear dropout system. Constructed from hydroformed, heat-treated ALX 6061 aluminum alloy, this frame utilizes Polygon's MultiTrac suspension system to deliver 135mm or 140mm of smooth rear travel depending on wheel configuration. Featuring progressive geometry with a slack head angle, steep seat tube angle, internal cable routing, and direct compatibility with full-mount SRAM Transmission drivetrains, it offers an ultra-versatile and future-proof foundation for custom trail builds.\u003c\/p\u003e\n\u003cp\u003e*Frameset only without rear shock\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eFrame Material:\u003c\/b\u003e ALX Trail Hydroformed 6061 Aluminum Alloy (135mm\/140mm Travel MultiTrac Suspension)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eWheel Size Compatibility:\u003c\/b\u003e Wheel Size System (27.5\" for sizes S–M \/ 29\" for sizes M–XL)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eRecommended Fork Travel:\u003c\/b\u003e 140mm (29\") or 150mm (27.5\")\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eRear Axle Spacing:\u003c\/b\u003e 12x148mm Boost Thru-Axle (SRAM UDH Standard)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eRecommended Rear Shock:\u003c\/b\u003e 210 x 55mm (Trunnion Upper \/ 25x8mm Lower)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eBottom Bracket Standard:\u003c\/b\u003e 73mm Threaded BSA\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eSeatpost Diameter:\u003c\/b\u003e 30.9mm (internal dropper post routing compatible)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eHeadset Standard:\u003c\/b\u003e Tapered Semi-Integrated \/ Zero Stack (ZS 44\/28.6 | ZS 56\/40)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eBrake Mount Standard:\u003c\/b\u003e Post-Mount Hydraulic Disc\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eCable Routing:\u003c\/b\u003e Internal shift, dropper, and rear brake line routing\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eIntended Use:\u003c\/b\u003e Trail, All-Mountain, and Singletrack Progression\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Polygon","offers":[{"title":"Grey \/ S","offer_id":54186674848036,"sku":"AIFPI29ST84SG2","price":999.99,"currency_code":"USD","in_stock":false},{"title":"Grey \/ M","offer_id":54186674880804,"sku":"AIFPI29ST85MG2","price":999.99,"currency_code":"USD","in_stock":false},{"title":"Grey \/ L","offer_id":54186674913572,"sku":"AIFPI29ST86LG2","price":999.99,"currency_code":"USD","in_stock":false},{"title":"Grey \/ XL","offer_id":54186674946340,"sku":"AIFPI29ST87LG2","price":999.99,"currency_code":"USD","in_stock":false},{"title":"Chameleon \/ Green \/ S","offer_id":54186674979108,"sku":"AIFPI29ST84SG1","price":999.99,"currency_code":"USD","in_stock":true},{"title":"Chameleon \/ Green \/ M","offer_id":54186675011876,"sku":"AIFPI29ST85MG1","price":999.99,"currency_code":"USD","in_stock":false},{"title":"Chameleon \/ Green \/ L","offer_id":54186675044644,"sku":"AIFPI29ST86LG1","price":999.99,"currency_code":"USD","in_stock":false},{"title":"Chameleon \/ Green \/ XL","offer_id":56043828674852,"sku":"AIFPI29ST87LG1","price":999.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0847\/4066\/9732\/files\/Polygon_Siskiu_T0_-_Mountain_Bike_UDH_-_ms_2.jpg?v=1760575226","url":"https:\/\/bikesonline.com\/products\/2025-polygon-siskiu-t8-udh-frameset","provider":"BikesOnline US","version":"1.0","type":"link"}