Based on frame geometry and build specs.
Frame | Surly 4130 CroMoly steel. Main triangle double-butted. TIG-welded. ED Coated BB Standard: BSA, 100mm, Threaded Tire Clearance: 3.8" | Alpha Platinum Aluminum, tapered head tube, top tube bag mounts, strapless full frame bag mounts, downtube fender mount, lower downtube accessory mount, seat stay rear rack mounts, internal rear derailleur & dropper post routing, 100mm threaded BB, UDH, 197x12mm BB Standard: BSA, 100mm, Threaded Tire Clearance: 3.8" |
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Fork | 447mm axle to crown, tapered straight blade, 4130 CroMoly. 51mm IS disc mount. 135mm-spaced dropouts. 17.5mm offset fork available after market | Farley carbon, tapered alloy steerer, crown rack mounts, lower leg cage mounts, 150x15mm thru axle |
Bottom Bracket | 100mm wide, standard English threading (1.37˝ x 24t) | FSA BB-7100, 100mm, BSA threaded |
Headset | FSA IS-2, 1-1/8'' top, 1.5'' bottom | |
Stem | Size: S, Bontrager Comp, 31.8mm, Blendr compatible, 7 degree, 50mm length; Size: M, Bontrager Comp, 31.8mm, Blendr compatible, 7 degree, 60mm length; Size: L, XL, Bontrager Comp, 31.8mm, Blendr compatible, 7 degree, 70mm length | |
Handlebar | Bontrager alloy, 31.8mm, 15mm rise, 750mm width | |
Saddle | Bontrager Verse P3, steel rails | |
Seatpost | 27.2mm | Size: S, TranzX JD-YSP18, 100mm travel, internal routing, 31.6mm, 361mm length; Size: M, TranzX JD-YSP18, 130mm travel, internal routing, 31.6mm, 425mm length; Size: L, XL, TranzX JD-YSP18, 150mm travel, internal routing, 31.6mm, 470mm length |
Pedals | VP-536 nylon platform | |
Grips | Bontrager XR Trail Comp, nylon lock-on |
Rear Derailleur | microSHIFT Advent X RD-M6205AM, 48T max cog | |
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Crank | Size: S, M, L, FSA Comet, 30T, 170mm length; Size: XL, FSA Comet, 30T, 175mm length | |
Shifters | microSHIFT Advent X SL-M9605, 10 speed | |
Cassette | microSHIFT Advent X, 11-48, 10 speed | |
Chain | KMC X10, 10 speed | |
Brakes | SRAM Level hydraulic disc |
Rims | SUNRingle Mulefut 80 SL, 32-hole cutout | |
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Front Hub | Bontrager alloy, sealed bearing, 6-bolt, 15x150mm thru axle | |
Rear Hub | Bontrager alloy, sealed bearing, 6-bolt, Rapid Drive 108, Shimano 10 freehub, 197x12mm thru axle | |
Tires | Bontrager Gnarwhal Team Issue, Tubeless Ready, Inner Strength sidewalls, studdable, aramid bead, 120 tpi, 27.5x4.50'' | |
Disc Rotors | Avid G2 CleanSweep, 6-bolt, 160mm |