Naturally, our steel Hook is something special, being built from double-butted Columbus Cromor tubing, with a tapered headtube and a T47 bottom bracket. XS and S sizes feature 650B wheels, M - XL have 700C options and both run WTB tubeless rims and tyres on sealed hubs. A Shimano GRX groupset with a subcompact 46 / 30T crankset, combined with an 11 - 36T cassette helps to keep you spinning up and over the hills, and GRX 400 callipers deliver powerful braking on the descents. The frameset is bedecked with mounts for every scenario, including a top tube bag, triple cage mounts and bottle mount options, as well as internal dynamo routing on the full carbon fork. TECHNICAL SPECIFICATIONS: Frame Columbus Cromor double butted, TA dropout, rack / fender mounts, 86.5 mm T47 BB shellFork Full carbon, TA, 1.1/2'' - 1.1/8'', triple cage mounts (can double as fender mounts),internal hub dynamo cable routingHandlebar Bombtrack CX-10 drop bar, 31.8 mm, 10° flareGrips Bombtrack Escape bar tapeStem Bombtrack Roam forged aluminium stem, -7°Headset Sealed external aheadset, 1.1/2'' - 1.1/8''Levers Shimano GRX ST-RX400 STI HydraulicShifter Shimano GRX ST-RX400 STI 2 x 10Brakes Shimano GRX BR-RX400 hydraulic disc brakesRotor Shimano SM-RT66 160 mm rotorsCrankset Shimano GRX FC-RX600-10, 24 mm spindleBB Bombtrack T47 internal sealed BB for 24 mm spindlePedals -Chain KMC X10 EPT Anti Rust chain, 1/2'' x 11/128'', XS - S 112L, M - XL 114LChainring Shimano GRX, 46 T / 30 TCassette Shimano CS-HG50 10-speed, 11 - 36 TFront derailleur Shimano GRX FD-RX400-FRear derailleur Shimano GRX RD-RX400, clutchFront hub Bombtrack Tau sealed hub, 6-bolt discRear hub Bombtrack Tau sealed hub, 11-speed, 6-bolt discThrough axle 12 x 100 mm / 12 x 142 mmFront rim WTB ST i19 double wall, TCS 2.0, 32hRear rim WTB ST i19 double wall, TCS 2.0, 32hSaddle Seido Comp saddleSeat post Bombtrack Beech 27.2 mm x 415 mm size XL; 315 mm size XS - LSeat clamp Bombtrack Origin 29.8 mmFront tire XS - S WTB Resolute 650B x 42C /M - XL WTB Venture 700C x 40C, tubeless readyRear tire XS - S WTB Resolute 650B x 42C /M - XL WTB Venture 700C x 40C, tubeless readyFender -Rack -Kickstand -Light -Weight 11.0 kg (size M)Weight frameset 2420 g frame (size M, incl. TA, hanger) / 600 g fork (300 mm steerer, incl. TA)Maximum rider weight 120 kg incl. luggageASTM riding condition 2 FRAME GEOMETRY: Bike Size XS S M L XL Wheel size 650B 650B 700C 700C 700C Seat Tube Length 460 490 525 545 565 Horizontal TT length 509 523 541 563 580 Seat Angle 73.6° 73.6° 73.6° 73.1° 73.1° Head Angle 70.6° 71.1° 71.6° 71.6° 71.6° Headtube Length 100 110 130 150 170 BB Drop 54 54 64 64 64 Chainstay Length 410 410 425 425 425 Fork Offset 50 50 50 50 50 Trail 65 62 65 65 65 Wheelbase Length 979 989 1014 1031 1049 Standover 732 752 803 821 841 Reach 355 366 375 386 397 Stack 522 534 565 584 603 Front Center 576 586 597 615 632 Axle to Crown 400 400 400 400 400 Minimum rider height ¹ 1500 1600 1700 1790 1880 Maximum rider height ¹ 1610 1710 1810 1900 1990 Final product may vary in appearance, finish and minor details.