Naraku Cylinder Head 21/23, 62mm For Yamaha 125

Unleash the full potential of your Yamaha 125 with the Naraku Racing 4-valve cylinder head. Designed to maximize performance and durability, this cylinder head is a direct replacement that will transform your riding experience.

Description

The Naraku Racing cylinder head is engineered to deliver increased flow, enhanced valve spring performance, and features larger valves (23mm intake, 21mm exhaust). This upgrade is specifically designed for Yamaha X-Max, WR, YZF-R 125, and other 125cc scooters and motorcycles utilizing the YI-3 engine. The 62mm combustion chamber optimizes fuel combustion, resulting in improved power output and throttle response. To achieve peak performance, it's essential to retune your carburetor or fuel injection system, such as with a Malossi Force Master. This cylinder head is compatible with big bore cylinders including Naraku NK600.74, Polini 166.0101, and Malossi M.3114852, as well as other cylinders with a 62-64mm bore. Built to withstand the rigors of racing, the Naraku cylinder head offers both reliability and performance gains.

Features & highlights

• Experience a significant boost in power and performance with the enhanced 4-valve design.
• Optimized flow characteristics maximize combustion efficiency.
• Reinforced valve springs ensure reliable operation at high RPMs.
• Larger valves (23mm intake, 21mm exhaust) allow for increased air and fuel intake.
• Direct replacement for Yamaha X-Max, WR, YZF-R 125 models with YI-3 engine.
• Compatible with a range of big bore cylinders (62-64mm).

Technical specifications

• Brand: Naraku
• Product Name: Cylinder Head Kit
• Combustion Chamber: 62mm
• Intake Valve Size: 23mm
• Exhaust Valve Size: 21mm
• Engine Type: 4-Stroke
• Color/Finish: Silver

Important to know

This cylinder head requires retuning of the carburetor or fuel injection system (e.g., with Malossi Force Master) to ensure optimal performance. New models may have a lambda sensor connection directly on the outlet; this must be closed on older models. Shafts for roller cam followers are NOT included.