Description
The Bombtrack Beyond+ frameset is designed as a robust and adaptable base for professional MTB and bikepacking builds.
Constructed from 4130 double-butted CrMo steel, it combines strength, reliability, and modern geometry optimized for long-distance and expedition use.
With Boost 12×148 mm rear spacing, rack and fender mounts, and stealth dropper-post routing, it’s ready for any setup — from heavy touring loads to technical off-road adventures.
Engineered to meet ASTM category 3 standards, the Beyond+ ensures long-term performance and safety under demanding conditions.
Technical Specifications
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Frame Material: 4130 double-butted CrMo steel
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Frame Standard: Boost 12×148 mm
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Fork: Not included (compatible with 500 mm axle-to-crown MTB forks)
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Headset Standard: ZS44 / EC44 (not included)
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Bottom Bracket: BSA, 73 mm shell width
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Seatpost: Ø 30.9 mm (dropper-post compatible)
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Seat Clamp: Bombtrack Origin 34.9 mm
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Rear Axle: 12×148 mm (included)
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Mounts: Rack, fender, and bottle cage mounts
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Brake Mount: IS rear, max. 180 mm rotor
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Max Chainring (1x): 32T at 52 mm chainline
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Max Tire Size: up to 29" × 3.0"
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Weight (frame only): 2910 g (size M, incl. axle & hanger)
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Max System Weight: 165 kg (incl. rider & luggage)
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ASTM Classification: Category 3 (MTB / Expedition / Bikepacking)
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Trailer Compatibility: Approved
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Seat-Tube Child Seat: Approved