So what does the EXT stand for? Well, the truth is, we can't even remember anymore, extreme, extended, extraordinary, take your pick. The important thing is what the Hook EXT is. Built on a 27.5" rim and using a wider tire produces a wheel with the same outer diameter as a typical 700x28c. This means it's possible to run bigger knobby mountain bike tires, with all the grip they offer, yet retain the geometry of a CX/gravel bike, something gravel races have long dreamed of. This is made possible thanks to a specially designed frame that utilizes a wider bottom bracket and yoke to maintain a wide yet short rear end. The Columbus Cromor double-butted tubing has the perfect blend of being lightweight yet durable, perfect for gravel riding. The fork was then developed specifically for this bike, with a super wide crown offering massive tire clearance and a stiffer tapered steerer tube for more accurate handling.
The SRAM Rival 1 is ideally suited to the Hook EXT, thanks to its simplified 1x design with clutch derailleur, wide range cassette and X-Sync chainring providing smooth shifting under any conditions. The hydraulic brakes bring superior stopping power to the EXT, which is reassuring on steeper technical descents. The versatile build is designed to offer as much all-around use as possible, so if your journey is mainly on-road, swap out the wheels for a set of 700c's, accommodating anything up to a 45c tire.
Frame/Fork: COLUMBUS "Cromor" double butted tubing frame in 51/54/57/60 cm with TA dropout; BT BIKES "CX-52" carbon/alloy fork, 1 1/8"-1 1/2" tapered with TA dropout; FSA "Orbit ITA" sealed a-headset, 1 1/8"-1 1/2" tapered Wheels/Tires: WTB "STS" double wall sleeved, tubeless compatible 32h front rim with BT BIKES "Origin" sealed CL front disc hub, 15x100mm thru axle; WTB "STS" double wall, sleeved, tubeless compatible 32h rear rim with BT BIKES "Origin" sealed cassette rear hub, 12x142mm thru axle; WTB "Nano" 27.5x2.1" tires Drivetrain: SRAM "Rival 1" cranks with SRAM "X-sync" alloy 44t chainring; KMC "X11-1" chain; FSA "386EVO" bottom bracket; SRAM 11-speed cassette with 11-36t; SRAM "Rival 1" derailleur Brakes/Cockpit: SRAM "Rival 1" hydraulic brake levers; SRAM flat mount hydraulic disc brakes, 160mm front/140mm rear; BT BIKES "Origin" forged alloy -7 degree stem; BT BIKES "CR-10" 6061-T6 butted alloy, 10 degree flared drop bar; SELLE SAN MARCO "Squadra-Startup" saddle; BT BIKES "620" alloy seatpost Extras: Metallic grey; 11.1 kg (24.5 lbs) in Medium 27.5" x XL - 60 Grey