Tension Apex
"Exceptional power transfer for full gas through the thickest mud, but feels light and ergonomic when slung over the shoulder as you scramble up that slippery verge"
Bombtrack Tension Apex
The Tension Apex is a race-ready cyclocross bike built for speed, control and precision on the course. Its lightweight aluminum frame with a T47 bottom bracket ensures efficient power transfer and durability, while the full carbon fork with through axles and flat mount disc brakes delivers responsive handling and confident stopping. Sizes XS and S come with 650B wheels to maintain ideal geometry and fit. The SRAM Apex XPLR 1x12 hydraulic groupset, paired with an 11 – 44T cassette and a wide 40T direct-mount crank, offers a perfect balance of gearing for fast starts and technical sections. Tubeless-ready WTB ST i19 rims provide low rolling resistance and enhanced traction. Whether you're racing tape to tape or pushing hard on mixed terrain, the Tension Apex is built to perform.
Frame & Fork
- Color 1: Cool grey / splatter light blue
- Color 2: Matt black
- Frame: 6061-T6 double butted aluminium, TA, rack / fender mounts, 86.5 mm T47 BB shell
- Fork: Full carbon, TA, 1.1/2'' - 1.1/8'', fender mounts
Drivetrain & Shifting
- Rear derailleur: Sram Apex XPLR, clutch
- Chain: Sram Apex, flattop, 1/2'' x 11/128'', 114L
- Cassette: Sram Apex XPLR 12-speed, 11 - 44 T
- Crankset: Sram Apex Wide, DUB spindle
- Chainring: Sram Apex steel, narrow-wide, 40 T
- Bottom bracket: Seido 86.5 mm T47 internal sealed BB for 30 mm spindle
Wheels & Tires
- Front hub: Bombtrack Arc sealed hub, 6-bolt disc
- Rear hub: Bombtrack Arc sealed hub, 11-speed HG body, 6-bolt disc
- Through axles: 12 x 100 mm / 12 x 142 mm
- Front rim: WTB ST i19 double wall, TCS 2.0, 32h
- Rear rim: WTB ST i19 double wall, TCS 2.0, 32h
- Front tire:
XS - S Schwalbe X-One R Evo TLE 33-584, tubeless ready
M - XL Challenge Grifo TLR, tanwall, 33-622, tubeless ready - Rear tire:
XS - S Schwalbe X-One R Evo TLE 33-584, tubeless ready
M - XL Challenge Grifo TLR, tanwall, 33-622, tubeless ready
Cockpit
- Handlebar: Seido CX-10 drop bar, 31.8 mm, 10° flare
- Grips: Bombtrack Command bar tape
- Stem: Seido Meander forged aluminium stem, -6°
- Headset: Seido Pro IS, sealed integrated headset, 1.1/2'' - 1.1/8''
Seats & Seatpost
- Seat: Seido Comp seat
- Seat post: Seido Yew Offset 27.2 mm x 355 mm
- Seat clamp: Bombtrack Prime 31.8 mm
Brakes
- Brake levers: Sram Apex XPLR double tap hydraulic
- Brakes: Sram Apex flat mount hydraulic disc brakes
- Rotors: Sram Centerline 160 mm rotors
Weight & Limits
- Complete weight: 9.9 kg (size M)
- Weight frame: 1580 g frame (size L, incl. TA, hanger)
- Weight fork: 610 g fork (300 mm steerer, incl. TA)
- Maximum rider weight: 120 kg incl. luggage
- ASTM riding condition: 2
The Tension Apex is a race-ready cyclocross bike built for speed, control and precision on the course. Its lightweight aluminum frame with a T47 bottom bracket ensures efficient power transfer and durability, while the full carbon fork with through axles and flat mount disc brakes delivers responsive handling and confident stopping. Sizes XS and S come with 650B wheels to maintain ideal geometry and fit. The SRAM Apex XPLR 1x12 hydraulic groupset, paired with an 11 – 44T cassette and a wide 40T direct-mount crank, offers a perfect balance of gearing for fast starts and technical sections. Tubeless-ready WTB ST i19 rims provide low rolling resistance and enhanced traction. Whether you're racing tape to tape or pushing hard on mixed terrain, the Tension Apex is built to perform.
Frame
- BB standard: T47 - 86.5 mm shell width
- Frame max tire clearance w/o fender:
XS - S 35-584
M - XL 37-622 - Frame front derailleur compatible: yes
- Front derailleur clamp diameter: 31.8 mm
- Brake mount rear: FM 140 / 160
- Maximum rotor clearance rear: 160 mm
- Frame thickness rear brake mount: 20 mm
- Bike trailer: not approved
- Seat tube mounted child seat: not approved
- ISO testing standard: Road
Fork
- Fork max tire clearance w/o fender:
XS - S 37-584
M - XL 37-622 - Fork steerer inner diameter: 23.6 mm
- Headset standard (S.H.I.S.):
IS42 / 28.6 | IS52 / 40 - Headset crown race angle: 45°
- Brake mount front: FM 140 / 160
- Maximum rotor clearance front: 160 mm
Drivetrain
- Maximum chainring clearance 1x:
42 T with 45 mm chainline - Maximum chainring clearance 2x:
50 / 34 T with 43.5 mm chainline - Crankarm:
XS - S 165 mm
M 170 mm
L - XL 175 mm - Q Factor: 152 mm
- BCD crank: 8 bolt direct mount (Sram compatible)
- Chainring offset: 6 mm
- Chainline: 47.5 mm
Seat & Seatpost
- Seat post diameter: 27.2 mm
- Seat post offset: 23 mm
- Seat post length: 355 mm
- Seat clamp diameter: 31.8 mm
Cockpit
- Stem length:
XS - S 80 mm
M 90 mm
L - XL 100 mm - Stem angle: -6°
- Headset spacers: 1 x 10 mm, 2 x 5 mm
Wheels
- Spoke length front wheel:
XS - S 273, 274mm
M - XL 291 mm, 293 mm - Spoke length rear wheel:
XS - S 274, 272mm
M - XL 293 mm, 291 mm - Spoke count (front / rear): 32 / 32
- Front through axle:
12 mm x 100 mm, 1.5 thread pitch - Rear through axle:
12 mm x 142 mm, 1.5 thread pitch - ERD:
XS - S 570 mm
M - XL 604 mm - Front hub PCD: 58 mm
- Rear hub PCD: 58 mm
- Front hub flange distance / offset:
56.5 mm center to center / 6.6 mm - Rear hub flange distance / offset:
51 mm center to center / 8.8 mm
Spare Parts
- Derailleur hanger: BT-DH-018
- Frame small parts: BT-CR-013
- Hub end caps front: BT-HC-012
- Hub end caps rear: BT-HC-017
- Cassette body: BT-CB-006
- Through axle front: BT-TA-F-603
- Through axle rear: BT-TA-R-601
