TENSION 1

The Tension 1 is the perfect bike for those wishing to start working their way up the cyclocross ranks. With its competition-ready legal build, our entry-level racer gives you everything you need to start earning those podium places with a competent aluminium frame and lightweight carbon fork. A Sram Apex One groupset with single-chainring 11-speed gearing – though wide for Elite level racing – will leave you enough in reserve lest you stall mid-race or enjoy taking it easy in the off-season.

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

HIGHLIGHTS

WHEELS

Size XS and S will come with 650B wheels to ensure proper fit without any compromises in geometry.
FRAME

Lightweight aluminium frame with heavily hydro formed tube profiles and T47 bottom bracket.
FORK

Full carbon fork with through axles and flat mount disc brake.
HUBS

Bombtrack Arc disc brake hubs with 12 mm through axles.
CRANK

Bombtrack Lyer 30 mm aluminium crank with 40t direct mount chainring.
DISC BRAKES

Hydraulic Sram Apex 1x11 groupset and brakes with 11 - 42t cassette.

Item 1 of 6

MATT ROCK GREY

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SPECIFICATIONS
BUILD INFOS
GEOMETRY

	TENSION 1
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 hub, 6-bolt disc
Rear hub	BOMBTRACK ARC sealed hub, 11-speed, 6-bolt disc
Through axle	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
Saddle	BOMBTRACK DART saddle
Seat post	BOMBTRACK BEECH 27.2 mm x 300 mm
Seat clamp	BOMBTRACK ORIGIN 31.8 mm
Front tire	XS - S VEE TIRE XCX 120 TPI TLR 32-584 / M - XL CHALLENGE GRIFO TLR 33-622, tubeless ready
Rear tire	XS - S VEE TIRE XCX 120 TPI TLR 32-584 / M - XL CHALLENGE GRIFO TLR 33-622, tubeless ready
Fender	-
Rack	-
Kickstand	-
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

Final product may vary in appearance, finish and minor details.

Model	TENSION 1
BB standard	T47 - 86.5 mm shell width
Headset standard (S.H.I.S.)	IS42 / 28.6 \| IS52 / 40
Headset crown race angle	45°
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
Front derailleur 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 thread pitch
Rear through axle	12 mm x 142 mm, 1.5 thread pitch
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
Chainring offset	5 mm
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
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
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	315 mm
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
Crankarm bolt	BT-CRP-002
Through axle front	BT-TA-F-603
Through axle rear	BT-TA-R-601

FRAME GEOMETRY

Model	TENSION 1
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°
Seat Angle effective	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 ¹	1500	1600	1700	1790	1880
Maximum rider height ¹	1610	1710	1810	1900	1990

¹ 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.

HANDLEBAR GEOMETRY

Model	TENSION 1
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	-	-	-	-	-

TENSION 1

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

WHEELS

FRAME

MATT ROCK GREY

CALE

TENSION 2