Kona's heritage is in simple and capable mountain bikes. Names like Explosif, Cinder Cone, and Fire Mountain are instantly recognizable. Classic in name but modern everywhere else, Kona's MTB Hardtails incorporate three decades' experience honing the legendary "Kona Ride".


The Explosif is Kona's classic Reynolds 520 cromoly hardtail, evolving over the years to the capable and fun-loving 27.5"-wheeled bike you see today. The 2018 Explosif sees increased standover by way of a new seat tube gusset, a move to 148x12mm rear axle spacing, and a rad new component spec.

Updated seat tube gusset increases standover
Reynolds 520 tubing and internal dropper routing
SRAM GX Eagle 12-speed drivetrain
New RockShox Revelation with 35mm stanchions


With a sleek Honzo-esque aesthetic, improved standover clearance, and streamlined cable routing, the 2019 collection of Kona hardtails is our best yet. All the way from Lana'i to Lava Dome, Cinder Cone to Kahuna, these capable hardtails are the gateway to the Kona Ride.

The Honzo-esque aesthetic is now shared by all MTB hardtail frames
Select models feature smooth welds at the head tube junction
New frame design increases standover clearance
Cable routing has been simplified across all hardtail models
Select models feature internal dropper post routing


In 2017 our classic steel single speed took on a fresh new look with 27.5+ wheels, and starting in 2018 we further refined the Reynolds 520 cromoly frame and added another model – the Unit X.

Unit X


Cable routing has been cleaned up with both shift and brake cables now running under the top tube and down the seat stays.
The Unit's seat tube is 31.6mm diameter and has accommodation for an internally-routed dropper post.