Overview
This bike’s built tough with Columbus Cromor steel tubing, giving it a smooth ride and loads of durability. We’ve loaded it up with all the mounts you’ll need to carry your gear: racks, cages, whatever you want.
The WTB Ranger 27.5 x 2.0” tires grip the trail like a champ, making it a blast when you leave the pavement behind. Thanks to the SRAM Apex Eagle 1x setup, shifting and braking feel solid and simple, with a wide gear range to tackle anything from steep climbs to fast flats. The Seido MGV carbon fork also has plenty of mounts and room for big tires, plus neat hidden cables to keep things looking clean. Basically, the EXT is ready to roll wherever your ride takes you, whether it’s a quick spin around the neighbourhood or a weekend off-road mission.
Features
High Tire Clearance: Fits up to 700c x 40mm (frame) and 2.25″ tires (fork) for rugged gravel capability.
Utility & Cargo Ready: Certified to haul bike trailers and child seats under heavy loads.
T47 Bottom Bracket: Wide, threaded design for maximum frame stiffness and creak-free maintenance.
1x or 2x Drivetrain: Compatible with simple single-ring (up to 44T) or double-ring road setups (up to 50/36T).
Powerful 180mm Braking: Accommodates a large 180 mm front disc rotor for superior stopping power on steep descents.
Specs
Frame & Fork
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Bottom Bracket (BB): T47 (85.5 mm shell width)
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Frame Max Tire Clearance: 52-584 (27.5″ x 2.0″) / 40-622 (700c x 40mm)
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Fork Max Tire Clearance: 57-584 (27.5″ x 2.25″) / 57-622 (700c x 2.25″)
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Front Derailleur: Compatible (28.6 mm clamp diameter)
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Headset Standard (S.H.I.S.): EC34 / 28.6 | EC44 / 40
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Headset Crown Race Angle: 45°
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Fork Steerer (Inner Dia.): 23.6 mm
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Utility Approvals: Bike trailer approved / Seat tube child seat approved
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Testing Standard: ISO Road
Brakes & Rotors
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Front Brake Mount: Flat Mount (FM) 160 / 180 mm (Max 180 mm rotor)
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Rear Brake Mount: Flat Mount (FM) 140 / 160 mm (Max 160 mm rotor)
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Frame Rear Mount Thickness: 10 mm
Drivetrain & Cockpit
Drivetrain & Cranks
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Chainline: 47.5 mm
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Q-Factor: 152 mm
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Crank BCD: SRAM-compatible 8-bolt direct mount
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Chainring Offset: 6 mm
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Max Chainring Clearance (1x): 44T with 45 mm chainline
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Max Chainring Clearance (2x): 50/36T with 45 mm chainline
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Crankarm Length by Size:
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XS: 165 mm
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S / M: 170 mm
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L / XL: 175 mm
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Cockpit & Seating
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Seatpost Diameter: 27.2 mm (Offset: 0 mm / Length: 350 mm)
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Seat Clamp Diameter: 29.8 mm
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Stem Angle: -6°
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Headset Spacers: 1 x 10 mm, 2 x 5 mm
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Stem Length by Size:
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XS / S: 80 mm
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M: 90 mm
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L / XL: 100 mm
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Wheels & Axles
Front Wheel
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Thru-Axle: 12 mm x 100 mm (1.5 thread pitch)
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Spoke Count: 32
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Hub PCD: 58 mm
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Flange Distance / Offset: 56.5 mm (Center-to-Center) / 6.6 mm
Rear Wheel
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Thru-Axle: 12 mm x 142 mm (1.5 thread pitch)
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Spoke Count: 32
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Hub PCD: 58 mm
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Flange Distance / Offset: 51 mm (Center-to-Center) / 8.8 mm
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ERD: 551 mm
Warranty
- Frame: 3 years
- Fork: 2 years
- Parts, Paint, Decals: 1 year
Note: This warranty is only valid for the original purchaser and requires proof of purchase.
Exclusions
This warranty does not cover:
- Normal wear and tear.
- Improper assembly or lack of maintenance.
- Installation of incompatible components.
- Damage from accidents, misuse, or neglect.
- Labor charges for part replacement.
Claims Process
Warranty claims must be processed through an authorized dealer or distributor. We replace defective parts but are not liable for any consequential damages or injuries.
Competitive Use
Using Bombtrack products in competitive events is at the user’s risk. This warranty does not cover any associated damages or injuries.
Legal Rights
This warranty offers specific legal rights, which may vary by country. In competitive events, the user assumes all risks.
International Warranty Terms
Warranty terms can differ internationally. Please consult your local distributor for accurate information.