TOP PERFORMANCE Maxi Kit TPR Cilinder kit + krukas – 86cc Ø50 mm Slag 44 mm – Aluminium

Ø 50 ENGINE TPR MAXI KIT SCOOTER MINARELLI/YAMAHA LC 44 mm STROKE

The new aluminium thermal kit represents a performance and technical evolution to increase engine power using a special aluminium alloy for the cylinder, which grants high rigidity even at the highest temperatures caused by intense use.

The cylinder liner is coated with a co-deposit of nickel and carbon silicide assuring utmost reliability and anti-wear properties. The new specifically designed piston is made of materials that guarantee to maintain its shape and mechanical properties even at high temperatures. Its particular geometry results in a very gap piston thus reducing inertia forces and allowing the engine to reach very high rpm.

The chromium plating of the piston rings, made of nodular cast iron at high surface finish and a special crankshaft-con-rod with full washers with specific balance, complete this kit that combines performance and reliability.

Scope of delivery:

1 MA combustion chamber cover

1 Cylinder Ø 50 Racing Aluminium stroke 44 mm (only for part no. 9926560) 

1 Gap weight piston Ø 50 Racing

1 Chromium plated piston ring Ø 50 x 1

1 Exhaust flange gasket

1 Special screw M14 x 1.25; L = 11 water drain

1 H2O head reduction (GAS 1/8)

1 Pin 12 x 40

2 Pin retaining ring Ø 12 AC 

1 Roller cage Ø 12 x 15 x 15 

1 Shaped OR Ø 104.37 x 3.53 

1 Water drain screw gasket Ø 14.1 x 22 x 1 

1 Compression seal Viton OR Ø 53.7 x 1.78 

8 Green Viton OR Ø 6.35 x 1.78 

1 Green Viton OR Ø 22.22 x 2.62 

1 Cylinder base gasket 

1 Crankshaft stroke 44 mm (only for part no. 9926560) 

1 Combustion chamber stroke 44 mm (only for part no. 9926560) 

 2 Bearing SKF 6204ETN9/C3 

1 Oil seal flywheel side 

1 Oil seal clutch side 

4 Stud bolt M7 x 1; L = 115 mm (only for part no. 9926560)

• Stroke mm 44
• Squish mm 0,90 ± 0,10
• Bore mm 50
• Displacement cm3 80
• Distribution diagram exhaust 190°
• Distribution diagram transfers 130°
• Compression ratio geometrical 15:1
• Compression ratio effective 8,3:1
• Recommended spark advance 20°