BMC Blast 20″


Freedom to explore. Blast’s mission is to empower young riders to go out and escape, share experiences and create incredible memories that they will look back on forever.

Designed to let young riders shred with confidence, be comfortable and in total control. The BMC Blast 20 fits kids from 5 to 8yrs, so they can grow with their bikes. Lightweight, dependable and fun!

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Frame Aluminum: Blast 20″ Lightweight Aluminium with Powder Coat Finish, 1 1/8″” Head Tube, BSA Threaded Bottom Bracket, 140 mm Post Mount, 9×135 mm QR, 58 mm tire clearance
Fork Blast 20″ Lightweight Aluminium with Powder Coat Finish, 140 mm Post Mount, 9×100 mm QR
Shifters Sram X4 Trigger, 1×8-speed
Rear Derailleur Sram X4, Medium Cage, 8-speed
Cassette Sunrace, 11-34T, Black finish, 8-speed
Chain Sram
Crankset Lightweight Forged Alloy Cranks, 32T, 1x Specific Narrow Wide chainring, 127 mm
Bottom Bracket BSA Threaded BB
Brakes Tektro HD-M286, Hydr. Disc Brake, (140/140) rotors, short reach levers
Wheelset Rims: Alex MD25, 25 mm inner width / Hubs: CNC Machined Alloy Hub Body, Sealed Bearings, Quick Release
Tires Kenda Booster, 20×2.4″
Handlebar SDG Slater Handlebar, 650 mm wide, 20 mm rise, 19 mm bar ends, 31.8 mm clamp
Stem BMC Blast, 40 mm length, +/- 6°
Saddle SDG Fly Jr
Seatpost Alloy 27.2 mm, 300 mm long
Weight 9.2 kg
Color Bronze



BMC Switzerland began life as the Bike Manufacturing Company in 1986. By 1994, the BMC brand was born. A few years later, our dynamic approach to bicycle design truly began to take shape with the injection of Andy Rihs’ vision in 1998 and the subsequent move into the pro peloton with Phonak Cycling Team. Since then, our bikes have become a fixture on the global scene and we’ve branched into further disciplines, taking accolades wherever possible. A high value or a value in excess of that normally or usually expected. This is exactly what BMC strives to deliver – an enrichment of your ride. It’s an ambition that goes some way to explaining why we invest so heavily in research and development.