Product Description
Motorcycle Piston Ring Installation Tool Set 50–85mm – NC-6108
The NC-6108 Motorcycle Piston Ring Installation Tool Set is designed to compress piston rings during cylinder installation, helping the cylinder slide over the piston and rings while reducing the risk of catching, bending, or damaging the piston rings.
Designed for compatible 2-stroke and 4-stroke engines, this kit includes 3 different ring compressors covering piston sizes from 50mm to 85mm.
Key Features
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50–85mm Piston Size Range
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Includes 3 Ring Compressors
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Works with compatible 2-Stroke & 4-Stroke Engines
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Compresses piston rings for easier cylinder installation
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Helps prevent piston rings from catching or becoming damaged
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Allows the cylinder to slide over compressed piston rings more easily
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Easily removed after the cylinder is positioned over the rings
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Durable metal construction
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Excellent for engine rebuilds and top-end work
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Useful when installing replacement cylinders, pistons, rings, and big-bore kits
Specifications
Product: Motorcycle Piston Ring Installation Tool Kit
Product ID / Part Number: NC-6108
Piston Size Range: 50–85mm
Number of Ring Compressors: 3
Material: Metal
Weight: 360g / Approx. 0.79 lb
Package Size: 17 × 9 × 2cm
Engine Compatibility: 2-Stroke & 4-Stroke
What Does This Tool Do?
Piston rings naturally expand outward from their grooves. When installing a cylinder, the rings must be carefully compressed so they can enter the cylinder bore without catching on the cylinder edge.
The NC-6108 holds the piston rings compressed against the piston, making it easier to carefully lower the cylinder into position.
This can help reduce the risk of:
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Broken piston rings
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Bent or distorted rings
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Rings catching on the cylinder
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Difficult cylinder installation
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Accidental damage during top-end assembly
Common Uses
Ideal for:
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Motorcycle engine rebuilds
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Scooter engine rebuilds
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ATV engines
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Dirt bikes
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Mopeds
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Pit bikes
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Go-karts
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Big-bore kit installations
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Cylinder replacement
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Piston and ring replacement
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Top-end rebuilds
What's Included
3 × Piston Ring Compressors
Combined Working Range: 50–85mm
Basic Use
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Correctly install the piston rings onto the piston.
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Lubricate the piston, rings, and cylinder as required.
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Select the appropriate compressor for your piston diameter.
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Position the tool around the piston rings.
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Compress the rings evenly into the piston grooves.
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Carefully lower the cylinder over the piston.
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Once the cylinder has passed over and captured the piston rings, remove the compressor.
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Complete cylinder installation according to the engine manufacturer's procedure.
IMPORTANT FITMENT NOTE
FOR 50–85mm PISTONS ONLY
Always verify your piston diameter before ordering.
This tool is intended to assist with piston ring compression during cylinder installation. Correct piston ring orientation, ring end-gap positioning, lubrication, and engine assembly procedures must still be followed.
NC-6108 • 50–85mm • 3-PIECE RING COMPRESSOR SET
Distributed by GY6 STORE
