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- Wrist Pin Diameter: 13mm
- Total Piston Height: 36.3mm
- Compression Height (from center of wrist pin hole to top edge of piston): 20mm
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- 35% Taller Gearing
- Recommended For Use With A Big Bore Kit
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- For Use With Naraku 52.4mm Cylinder Kit
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- Upgrades to 70cc
- Cylinder Bore: 47mm
- Cylinder Sleeve Outer Diameter: 50.5mm
- Wrist Pin Diameter: 10mm
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- For Use With 20mm Variator Boss
- Includes 10 each of .1mm, .2mm and .5mm Shims
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- Fiberglass Reeds
- Inner Diameter of Intake Side: 30mm
- Diagonal Bolt Hole Spacing: 62mm
- Includes Mounting Hardware
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- Note: Only for vehicles with AC charging system
- Split connection: 4 pin, 2 pin
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- Diameter of Combustion Chamber: 47.5mm
- See Related Items For Cylinder Kit
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- Upgrades to 70cc
- Cylinder Bore: 47mm
- Cylinder Sleeve Outer Diameter: 52.15mm
- Wrist Pin Diameter: 12mm
- Total Piston Height: 54mm
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- Upgrades to 63.7cc
- Cylinder Bore: 42mm
- Cylinder Sleeve Outer Diameter: 45.7mm
- Wrist Pin Diameter: 10mm
- Total Piston Height: 33mm
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- Head Pipe Bolt Hole Spacing: 50mm
- Head Pipe Inner Diameter: 20mm
- Does Not Include Mounting Bolts
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- Upgrades to 72cc
- Cylinder Bore: 47mm
- Cylinder Sleeve Outer Diameter: 53.1mm
- Wrist Pin Diameter: 13mm
- Total Piston Height: 34.1mm
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- Bore: 63mm
- Outer Sleeve Diameter: 64.9mm
- Displacement Increase to 180cc
- Overall Height (cylinder): 90mm
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- Exhaust Valve Diameter: 23mm
- Intake Valve Diameter: 27.75mm
- Exhaust Port Diameter: 26.5mm
- Intake Port Diameter: 27.5mm
- Overall Height: 61.75mm
- Stud Spacing: 76.7mm
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- Upgrades to 70cc
- Aluminum Construction with Nickel Carbide Plated Bore
- Cylinder Bore: 47.6mm
- Cylinder Sleeve Outer Diameter: 51.8mm
- Includes Carbon Fiber Reeds
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- Includes Head, Base and Exhaust Gaskets plus O-Rings and Seals
