TOP PERFORMANCE Maxi Kit 85cc Racing Derbi Senda (D50B0-D50B1) Piaggio Engine - Cast Iron Cylinder Minacrom, 5 Ports - Stroke 44

This new “MAXI KIT” represents a further technical and performance evolution for those who want to increase their engine’s power. It has been created by combining the Ø 50 piston cylinder assy with disassembled head with a special connecting rod assy with solid plates, 44 mm stroke and specifi c balance, thus obtaining a full displacement of 86 cc.

The main characteristic of this kit is the high torque value it develops, ensuring acceleration, pick-up and driveability never experienced before.

CYLINDER SPECIFICATIONS

• Bore  50 mm
• Stroke  44 mm
• Displacement  86.35 cm3
• Squish  0.9-1.1 mm
• Compression ratio Geometric 14:1
• Compression ratio Effective 8.4:1
• Distribution diagram Exhaust 192°
• Distribution diagram Transfers 192°
• Recommended spark advance: 16° (1 mm before of TDC)