Breezer Thunder Steel Hardtail Mountain Bike

The Breezer Thunder is a premium steel hardtail built for riders who want a bike that's equally at home on technical singletrack and multi-day bikepacking adventures. Its butted 4130 chromoly steel frame, 130mm Marzocchi Bomber Z2 fork, and Shimano Deore 1x12 drivetrain deliver a smooth, capable ride with exceptional durability and climbing efficiency.

Designed with modern trail geometry and numerous mounting points for racks, bottles, and gear, the Thunder is ready for everything from aggressive trail rides to backcountry expeditions.

Features

• Butted 4130 chromoly steel frame
• Marzocchi Bomber Z2 suspension fork with 130mm travel
• Shimano Deore 1x12-speed drivetrain
• Wide-range 10–51T cassette
• TRP Slate EVO hydraulic disc brakes
• Tubeless-ready WTB ST i30 wheels
• KS Rage I dropper post
• Multiple mounts for bikepacking and touring accessories
• UDH (Universal Derailleur Hanger) compatible

Specifications

Frameset

• Frame: Breezer Butted 4130 Chromoly Steel
• Fork: Marzocchi Bomber Z2, 130mm Travel
• Headset: FSA Orbit

Drivetrain

• Shifter: Shimano Deore RapidFire Plus, 12-Speed
• Rear Derailleur: Shimano Deore Shadow Plus
• Crankset: Shimano Deore
• Bottom Bracket: Shimano Deore
• Cassette: Shimano Deore 10–51T
• Chain: KMC X12 EPT Anti-Rust

Brakes

• Brakes: TRP Slate EVO Hydraulic Disc
• Rotors: TRP Center Lock, 180mm Front & Rear

Wheelset

• Hubs: KTi Sealed Bearing, Center Lock
• Rear Freehub: Shimano MicroSpline
• Rims: WTB ST i30 TCS 2.0, Tubeless Ready
• Front Tire: WTB Vigilante 29 × 2.5"
• Rear Tire: WTB Trail Boss 29 × 2.4"

Components

• Handlebar: Alloy, 780mm Width
• Stem: 6061 Aluminum, 45mm
• Grips: WTB Burr Lock-On
• Saddle: WTB Solano, Chromoly Rails
• Seatpost: KS Rage I Dropper Post
• Seat Clamp: Alloy Quick Release

Specifications

• Wheel Size: 29"
• Frame Material: 4130 Chromoly Steel
• Weight: 34.2 lbs (Medium)
• Color: Heavy Skies (Matte Pewter)

Rider Height Guide