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HPSP RACING PISTON LC135 COATING DOME 63MM 65MM 66MM PIN 14

RM150

Coated dome-top racing piston by HPSP Racing for Yamaha LC135 and Y15ZR engines, used in big-bore cylinder builds with a 14mm gudgeon pin.

Option

In stock · Estimated delivery: 3–7 business days (West Malaysia)

Product Details

Overview

Coated dome-top racing piston by HPSP Racing for Yamaha LC135 and Y15ZR engines, used in big-bore cylinder builds with a 14mm gudgeon pin.

Key Features

Dome-top piston for compression/performance builds
Surface coating on the piston
Available in 63mm, 65mm, 66mm bore sizes
1.5mm or 2.5mm dome height options
14mm gudgeon pin

Specifications

Brand: HPSP Racing
Product: Racing Piston
Type: Dome-top, coated, big-bore piston
Main spec: 63 / 65 / 66mm bore, dome 1.5mm or 2.5mm, Pin 14
Compatibility: Yamaha LC135, Yamaha Y15ZR (cylinder bore must match)

Variants & Setup

Bore size must match your cylinder/cylinder kit exactly; a 2.5mm dome gives a higher compression ratio than the 1.5mm option. Confirm ring set and pin size against your block before ordering.

Installation & Package

Requires engine-shop fitting with correct piston rings, circlips and cylinder bore matching; not a bolt-on part. Package includes piston, pin and circlips (rings sold separately unless stated).

Summary

Coated dome-top racing piston for Yamaha LC135/Y15ZR big-bore builds, 63-66mm with a 14mm pin.

Important Notes

This is a racing/performance piston for modified engines — bore and dome selection changes compression ratio and may need carburetor/ECU tuning and higher-octane fuel. Incorrect sizing can damage the engine; fitting by an experienced mechanic is recommended.

Frequently Asked Questions

No, bore size must match your cylinder exactly; big-bore kits need matching machining.

The 2.5mm dome gives a higher compression ratio than the 1.5mm version.

Yes, as long as cylinder bore and pin size (14mm) match.

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