TEMPEST

The Tempest blends the lively comfort of a steel frame with modern performance. Its carbon fork ensures precise steering and vibration damping, while the Seido Sinus wheelset and tubeless - ready Kenda 4titude tires enhance speed and grip. Equipped with a Shimano 105 2 x 12 hydraulic groupset and Seido Tau disc hubs, it’s built for efficiency, control, and all - day comfort. Whether you're chasing speed, enjoying a weekend escape, or exploring new routes, this is a road bike that delivers a smooth, confident, and rewarding ride — no matter the journey ahead.

STORM BLUE

HIGHLIGHTS

FRAME

Double butted crmo frame with tapered head tube.
FORK

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

Shimano 105 2 x 12 hydraulic group with 11 - 36 T cassette.
RIMS

Tubeless ready Seido Sinus rims.
SEAT

Seido Course short nose seat.
TIRES

120 TPI Kenda 4titude tubeless ready tires in 32 mm width.

Item 1 of 6

"A timeless steel road bike that balances comfort, precision and all-day endurance."

SPECIFICATIONS
BUILD INFOS
GEOMETRY

Model	Storm blue
Color 1	-
Color 2	-
Frame	4130 double butted crmo, TA, rack / fender mounts, internal light cable routing, 85.5 mm T47 BB shell
Fork	Full carbon, TA, 1.1/2'' - 1.1/8''
Handlebar	Seido Tackle Road drop bar, 31.8 mm, 2° flare
Grips	Bombtrack Command bar tape
Stem	Seido Meander forged aluminium stem, -6°
Headset	Seido Pro EC sealed external headset, 1.1/2'' - 1.1/8''
Levers	Shimano 105 ST-R7120 STI hydraulic
Shifter	Shimano 105 ST-R7120 STI 2x12
Brakes	Shimano 105 hydraulic disc brakes
Rotor	Shimano SM-RT86 160 mm rotors
Crankset	Shimano 105 FC-R7100, hollow forged aluminium crank, 24 mm spindle
BB	Seido 85.5 mm T47 internal sealed BB for 24 mm spindle
Pedals	-
Chain	Shimano 105 CN-M7100 chain, 1/2'' x 11/128'', 114L
Chainring	Shimano 105, 12-speed, 50 / 34 T
Cassette	Shimano 105 CS-HG70012 12-speed, 11 - 36 T
Front derailleur	Shimano 105 FD-R7100
Rear derailleur	Shimano 105 RD-R7100
Front hub	Seido Tau sealed hub, 6-bolt disc
Rear hub	Seido Tau sealed hub, HG driver, 6-bolt disc
Through axle	12 x 100 mm / 12 x 142 mm
Front rim	Seido Sinus i21, tubeless ready, 28h
Rear rim	Seido Sinus i21, tubeless ready, 28h
Saddle	Seido Course saddle
Seat post	Seido Yew aluminium seatpost, 27.2 mm x 350 mm
Seat clamp	Bombtrack Prime 29.8 mm
Front tire	Kenda 4titude, 120 TPI, 700C x 32C, tubeless ready
Rear tire	Kenda 4titude, 120 TPI, 700C x 32C, tubeless ready
Fender	-
Rack	-
Kickstand	-
Light	-
Weight	10.2 kg (size M)
Weight frameset	tba
Maximum rider weight	120 kg incl. Luggage
ASTM riding condition	1

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

Model	TEMPEST
BB standard	T47 - 85.5 mm shell width
Headset standard (S.H.I.S.)	EC34 / 28.6 \| EC44 / 40
Headset crown race angle	45°
Fork steerer inner diameter	23.6 mm
Fork max tire clearance w/o fender	700C x 35C
Frame max tire clearance w/o fender	700C x 35C
Maximum chainring clearance 1x	44 T with 45 mm chainline
Maximum chainring clearance 2x	53 / 39 T with 43.5 mm chainline
Seat post diameter	27.2 mm
Seat clamp diameter	29.8 mm
Front derailleur clamp diameter	28.6 mm
Frame front derailleur compatible	yes
Brake mount front	FM 140 / 160
Brake mount rear	FM 140 / 160
Maximum rotor clearance front	180 mm
Maximum rotor clearance rear	180 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 165 mm / S - M 170 mm / L - XL 175 mm
Q Factor	148 mm
BCD crank	110 mm / 80 mm, asymmetric Shimano 4 bolts
Chainring offset	0 mm
Chainline	44.5 mm
Spoke length front wheel	tba
Spoke length rear wheel	tba
Spoke count (front / rear)	28 / 28
ERD	585 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	-6°
Headset spacers	1 x 10 mm, 2 x 5 mm
Seat post offset	0 mm
Seat post length	350 mm
Bike trailer	not approved
Seat tube mounted child seat	not approved
Derailleur hanger	BT-DH-008
Frame small parts	tba
Hub end caps front	BT-HC-014
Hub end caps rear	BT-HC-017
Cassette body	BT-CB-006
Crankarm bolt	-
Through axle front	BT-TA-F-601
Through axle rear	BT-TA-R-602

FRAME GEOMETRY

Model	TEMPEST
Bike Size	S	M	L
Wheel size	700C	700C	700C
Seat Tube Length	490	520	550
Horizontal TT length	532	549	562
Seat Angle	74.0°	74.0°	74.0°
Head Angle	72.0°	72.0°	72.0°
Headtube Length	130	150	170
BB Drop	72	72	70
Chainstay Length	410	410	410
Fork Offset	51	51	51
Trail	59	59	59
Wheelbase Length	987	1005	1020
Standover	789	813	838
Reach	371	383	392
Stack	559	578	595
Front Center	588	606	620
Axle to Crown	385	385	385
Minimum rider height ¹	1600	1700	1790
Maximum rider height ¹	1710	1810	1900

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	TEMPEST
Bike Size	S	M	L
Handlebar type	Dropbar	Dropbar	Dropbar
Width (drops)	410	410	430
Width (barends)	420	420	440
Reach	77	77	77
Flare	3°	3°	3°
Backsweep	6°	6°	6°
Drop	128	128	128
Upsweep	-	-	-
Rise	-	-	-

TEMPEST

STORM BLUE

FRAME

"A timeless steel road bike that balances comfort, precision and all-day endurance."

AUDAX

MUNROE AL