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

Frame Material: 4130 double-butted CrMo steel
Frame Standard: Boost 12×148 mm
Fork: Not included (compatible with 500 mm axle-to-crown MTB forks)
Headset Standard: ZS44 / EC44 (not included)
Bottom Bracket: BSA, 73 mm shell width
Seatpost: Ø 30.9 mm (dropper-post compatible)
Seat Clamp: Bombtrack Origin 34.9 mm
Rear Axle: 12×148 mm (included)
Mounts: Rack, fender, and bottle cage mounts
Brake Mount: IS rear, max. 180 mm rotor
Max Chainring (1x): 32T at 52 mm chainline
Max Tire Size: up to 29" × 3.0"
Weight (frame only): 2910 g (size M, incl. axle & hanger)
Max System Weight: 165 kg (incl. rider & luggage)
ASTM Classification: Category 3 (MTB / Expedition / Bikepacking)
Trailer Compatibility: Approved
Seat-Tube Child Seat: Approved