Top Performances TPR Factory Racing Crankcase for Piaggio  Zip 70cc 2-stroke (flange mounted cylinders).

The TPR Factory 70cc crankcase is Top Performances’ flagship racing case for Piaggio. CNC-machined from high-grade 6082 Anti-corodal alloy, it is packed with innovative features that push crankcase design to world-class levels. Built for serious racing, it offers unmatched precision, strength and adaptability.

Modular design:
Configurable for flange mounted 70cc cylinder kits.
Compatible with disc & drum brakes.

Key innovations:
-Extended wheelbase: axle shifted 10mm rearward and downward for improved chassis geometry.
-Inverted gearbox: opens to the outside, eliminating gearbox cover and improving coaxial precision.
-Flanged oil seals: allow simultaneous bearing insertion, ensuring perfect concentricity and reduced crank stress.
-Integrated removable swingarm: robust 14mm connection with two pins for precise alignment.
-Redesigned intake: accommodates oversized reed valves and carbs (60×40mm), better carb positioning.
-Optimised ventilation: dedicated in/out cooling passages plus CVT mid-outlet.
-Increased transmission volume: up to 111mm for variator and 145mm for torque drive.

Reinforced construction:
-FEM-optimised case halves eliminate torsion and twisting under load.
-Strengthened wheel axle and bearing seats for high stress resistance.
-All connections with M8 high-strength steel screws (+70% resistance over M6).

Technical specifications:
-Material: 6082 Anticorodal alloy.
-Crankshaft compatibility: up to 47mm stroke with 95/96mm rods (no mods required).
-Ignition: PVL internal rotor only.
-Cooling: electric water pump required.
-Enlarged bearing seats and cooling passages.
-Compatible with all transmission brands.

A true state-of-the-art racing case, the TPR Factory gives tuners the ultimate foundation for high-output Piaggio engines.

99CRPT0700