Meteor Piston & Cylinder Head Insert Kit Racing 12°

Maximum performance meets uncompromising racing reliability:
This 12° piston & cylinder head insert kit was specifically developed for 125 cc motocross and enduro engines, targeting riders, tuners, and racing enthusiasts who want to unlock their engine's full potential.

Thanks to the precise tuning of high-performance pistons and a specially shaped cylinder head insert, this kit ensures more efficient combustion, improved throttle response, and powerful, linear power delivery across the entire RPM range.

The included Meteor Piston high-performance piston Ø 54 mm with 12° cone head impresses with:
 • optimized piston head geometry with 12° chamfer
 • Oil-Dots coating for improved oil adhesion and reduced friction
 • semi-trapezoidal, chrome-plated steel piston rings for optimal gas sealing
 • high thermal stability even under extreme racing conditions
 • specially shaped cylinder head insert as a replacement for the original dome
 • made from a high-quality aluminum alloy using gravity casting and precisely finished – for high durability, smooth engine operation, and long service life

The precisely matched cylinder head insert with 12° chamfer enables:
 • more efficient combustion
 • improved torque in the low and mid RPM range
 • consistent, controllable power delivery

The result is direct throttle response and optimal use of engine power in racing.

Scope of delivery
 • High-performance piston Ø 54 mm
 • chrome-plated, semi-trapezoidal piston rings
 • biconical piston pin
 • piston pin retaining rings
 • specially shaped cylinder head insert

All components are interchangeable and available separately.

Technical data
 • Nominal diameter: 54 mm
 • Compression height: 29.50 mm
 • Total piston height: 58.10 mm
 • Head shape: 12° cone head (frustum-shaped)
 • Head height: 0.60 mm
 • Manufacturing: Gravity casting

Important note
This kit is intended exclusively for racing.
Use only the Meteor Piston piston and matching cylinder head insert included in the set. Combining with other pistons or inserts is not permitted.

The 12° Piston & Cylinder Head Insert Kit is the ideal choice for those in motocross or enduro racing who demand the highest standards in performance, precision, and durability. Developed from racing experience, cutting-edge technology, and Italian manufacturing expertise – for uncompromising performance on the track.