the Tension 1

Utilising a versatile geometry means any task from commuting to CX racing are all well within the scope of this adaptable machine.

"Designed for hour-long racing efforts, or hacking through the woods at maximum speed."

Introducing the Tension 1

The perfect introduction to cyclocross. With a competition-legal build paired to a light aluminium frame and carbon fork, our entry-level racer provides everything you need to get started. Sram’s Apex 1 groupset supplies hydraulic disc brakes for consistent control in the worst conditions. Helping you always find the right ratio, its single-chainring 11-speed gearing is easy to operate and service. A small concession to those starting out, its wide-ratio cassette prevents stalling if you run out of energy mid-race, while also allowing for greater versatility when not competing.

 

  • * Lightweight aluminum frame with heavily hydro formed tube profiles and T47 bottom bracket.
  • * Size XS and S will come with 650B wheels to ensure proper fit without any compromises in geometry.
  • * Full carbon fork with through axles and flat mount disc brake.
  • * Bombtrack Lyer 30 mm aluminium crank with 40 T direct mount chainring.
  • * Bombtrack ARC disc brake hubs with 12 mm through axles.
  • * Hydraulic Sram Apex 1 x 11 groupset and brakes with 11 - 42 T cassette.
  • * Tubeless ready WTB ST i19 rims with tubeless ready Challenge Grifo TLR 700 x 33C tanwall / Donnelly MXP 650 x 33C blackwall tires.
  • * Rear rack and fender mounts.
  •  

 

  • SPECIFICATION

    Color 1 Matt Rock Grey
    Color 2 -
    Frame 6061-T6 double butted aluminium, TA, rack / fender mounts, 86.5 mm BB T47 shell
    Fork Full carbon, TA, 1.1/2'' - 1.1/8'', fender mounts
    Handlebar BOMBTRACK CX-10 drop bar, 31.8 mm, 10° flare
    Grips BOMBTRACK COMMAND bar tape
    Stem BOMBTRACK ROAM forged aluminium stem, -7°
    Headset Sealed integrated aheadset, 1.1/2'' - 1.1/8''
    Levers SRAM APEX 1 double tap hydraulic
    Shifter SRAM APEX 1 double tap 1 x 11
    Brakes SRAM APEX flat mount hydraulic disc brakes with 140 mm rotors
    Crankset BOMBTRACK LYER forged aluminium crank, direct mount interface (SRAM compatible), 30 mm spindle
    BB BOMBTRACK T47 internal sealed BB for 30 mm spindle
    Pedals -
    Chain KMC X11 chain, 1/2'' x 11/128'', 114L
    Chainring CNC machined aluminium, narrow-wide, 40 T
    Cassette SRAM PG-1130 11-speed, 11 - 42 T
    Front derailleur -
    Rear derailleur SRAM APEX 1, clutch, long cage
    Front hub BOMBTRACK ARC sealed disc hub, 12 x 100 mm thru-axle
    Rear hub BOMBTRACK ARC sealed hub, 11-speed, 6-bolt disc, 12 x 142 mm thru-axle
    Front rim WTB ST i19 double wall, TCS 2.0, 32h
    Rear rim WTB ST i19 double wall, TCS 2.0, 32h
    Saddle BOMBTRACK COMP saddle
    Seat post BOMBTRACK BEECH 27.2 mm x 300 mm
    Seat clamp BOMBTRACK ORIGIN 31.8 mm
    Front tire XS - S 650B DONNELLY MXP TLR 33-584 / M - XL 700C CHALLENGE GRIFO TLR 33-622, tubeless ready
    Rear tire XS - S 650B DONNELLY MXP TLR 33-584 / M - XL 700C CHALLENGE GRIFO TLR 33-622, tubeless ready
    Fender -
    Rack -
    Light -
    Weight 9.4 kg (size M)
    Weight frameset 1580 g frame (size L, incl. TA, hanger)
    610 g fork (300 mm steerer, incl. TA)
    Maximum rider weight 120 kg incl. luggage
    ASTM riding condition 2
  • BUILD INFO

    BB Standard T47 - 86.5 mm shell width
    Headset Standard (S.H.I.S.) IS42 / 28.6 | IS52 / 40
    Fork Max Tire Clearance w/o fender XS - S 650B x 37C / M - XL 700C x 37C
    Frame Max Tire Clearance w/o fender XS - S 650B x 35C / M - XL 700C x 37C
    Maximum chainring clearance 1x 42 T with 45 mm chainline
    Maximum chainring clearance 2x 50 / 34 T with 43.5 mm chainline
    Seat Post Diameter 27.2 mm
    Seat clamp diameter 31.8 mm
    Brake mount front FM
    Brake mount rear FM
    Maximum rotor clearance front 160 mm
    Maximum rotor clearance rear 160 mm
    Front through axle 12 mm x 100 mm, 1.5 TPI
    Rear through axle 12 mm x 142 mm, 1.5 TPI
    Derailleur hanger BT-DH-018
    ISO testing standard Road
    Crankarm XS - S 165 mm /  M 170 mm / L - XL 175 mm
    Q Factor 152 mm
    BCD crank direct mount (Sram compatible)
    Chainline 45 mm
    Spoke length front wheel tba
    Spoke length rear wheel tba
    Spoke count (front / rear) 32 / 32
    ERD XS - S 570 mm / M - XL 604 mm
    Front hub PCD 58 mm
    Rear hub PCD 58 mm
    Stem Length XS - S 80 mm / M 90 mm / L - XL 100 mm
    Stem angle -7°
    Headset Spacers 1 x 10 mm, 2 x 5 mm
    Seat post offset 24 mm
    Seat post length 300 mm
  • GEOMETRY FRAME

    Bike Size XS S M L XL
    Wheel size 650B 650B 700C 700C 700C
    Seat Tube Length 460 490 530 560 590
    Horizontal TT length 507 523 552 570 586
    Seat Angle 73.5° 73.5° 73.0° 73.0° 73.0°
    Head Angle 71.0° 71.5° 71.5° 72.0° 72.0°
    Headtube Length 100 115 139 162 179
    BB Drop 55 55 65 65 65
    Chainstay Length 410 410 425 425 425
    Fork Offset 45 45 45 45 45
    Trail 67 64 70 66 66
    Wheelbase Length 967 979 1014 1028 1044
    Standover 734 757 799 825 848
    Reach 355 366 380 391 402
    Stack 514 530 563 587 603
    Front Center 563 575 598 611 627
    Axle to Crown 400 400 400 400 400
    Minimum rider height * 1500 1600 1700 1790 1880
    Maximum rider height * 1610 1710 1810 1900 1990

    * Our bike size recommendation generally represents a rough guideline for quickly narrowing down the sizes from which to choose based on the body height. Bike fitting is a complex topic and other measurements and factors have to be accounted for as well. Since no two human bodys are exactly the same it is not possible to give a 100% correct advice for everyone. Therefore BOMBTRACK cannot guarantee for the stated recommendations to be correct for every individual customer. The best way to work out the correct size is to consult a local BOMBTRACK dealer or a professional bike fitter and have them determine the needed size.

  • GEOMETRY HANDLEBAR

    Bike Size XS S M L XL
    Handlebar type Dropbar Dropbar Dropbar Dropbar Dropbar
    Width (drops) 400 400 420 440 440
    Width (barends) 446 446 466 486 486
    Reach 75 75 75 75 75
    Flare 10° 10° 10° 10° 10°
    Backsweep - - - - -
    Drop 116 116 116 116 116
    Upsweep - - - - -
    Rise - - - - -

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