The Kona Fire Mountain is a confidence‑building hardtail designed for riders who want a dependable, versatile bike for mixed terrain. Its 6061 aluminum frame, 100 mm suspension fork, wide‑rim wheels, and smooth‑shifting 1×9 drivetrain make it a capable companion for trail exploration, fitness rides, and everyday adventures. Wheel sizes vary for the different size options in order to keep the geometry ratios in check, offering stability, control, and comfort for a wide range of riders: 26" (XS); 27.5" (S) and 29" (M-XL).

Specs

FRAME: Kona 6061 Aluminum Butted
SIZES: XS, S, M, L, XL
REAR SHOCK: n/a
FORK: SR/Suntour XCE28 Coil 100mm
CRANKSET: Prowheel EPRO-MD26 30t / Length XS-S 165mm / M-XL 170mm
BOTTOM BRACKET: Feimin BSA 73
PEDALS: Kona JS2
CHAIN: KMC Z8.3
CASSETTE: Shimano ESSA HG300 11-45t 8spd
CHAINGUIDE: n/a
FRONT DERAILLEUR: n/a
REAR DERAILLEUR: Microshift Advent
SHIFTERS: Shimano ALTUS
BRAKE CALIPERS: Tektro M280 2-piston
FRONT BRAKE ROTOR: Tektro 180mm 6B 1.8mm
REAR BRAKE ROTOR: Tektro 160mm 6B 1.8mm
BRAKE LEVERS: Tektro CL-330RS Mechanical
HEADSET: Feimin ZS44/ZS56
HANDLEBAR: Kona 31.8mm / Back 6º / Rise 20mm / Width XS-S 740mm / M-XL 780mm
STEM: Kona 31.8mm / Rise 7º / Length XS-M 40mm / L-XL 50mm
SEATPOST: Kona w/Offset 31.6mm / Length XS-M 350mm / L-XL 400mm
SEAT CLAMP: Kona Clamp 34.9mm
GRIPS: Kona Key Grip
SADDLE: Kona MTB
FRONT HUB: Joytech 9x100mm
REAR HUB: Joytech 10x135mm
SPOKES: Stainless 2.0mm Black
RIMS: Double Wall Aluminum
FRONT TIRE: WTB Trail Boss 2.25” (XS=26” WTB Ranger, S=27.5”, M-XL=29”)
REAR TIRE: WTB Trail Boss 2.25” (XS=26” WTB Ranger, S=27.5”, M-XL=29”)
PAINT COLOR: Gloss Metallic Peridot w/ Clay Decals

Geometry