Super Head 4V+R Bore Up Kit 181cc GROM MSX125

【SP Takegawa 01-05-0114 Super Head 4V+R Bore Up Kit 181cc GROM MSX125 Engine Parts Takegawa】
■Product Description
Super Head 4V+R (1 Cam 4 Valve).
By adopting a 1-cam 4-valve head, we have achieved both easy-to-handle output characteristics and high output!

■Detailed Description
●Super Head 4V+R (1 Cam 4 Valve)
By having two intake and two exhaust valves each, the valve curtain area is expanded, achieving high intake and exhaust efficiency.
The original head shape is designed to balance the center plug, valve pinch angle, combustion chamber shape, and port shape that accompany the conversion to 4 valves, achieving high output that cannot be obtained with a normal head. The combustion chamber is finished with high precision by NC machining.
●SOHC class leading intake and exhaust efficiency
Valve diameter IN: 25mm x 2 / EX: 21.5mm x 2
Valve stem shaft diameter: 4.5mm for both IN and EX.
By adopting unequal pitch valve springs, surging at high rotation is prevented.
The cylinder head surface is black painted.
An inspection breather cover is included, so by purchasing an oil catch tank kit separately, the internal pressure of the engine can be released.
The inspection breather cover, inspection cover, and L. cylinder head side cover are made of die-cast aluminum with barrel polishing.
●Aluminum forged roller rocker arm
Reduces friction resistance with the camshaft and achieves smooth operation! Maximizes output and maintains output in the mid to high speed range.
●Auto decompression camshaft
Allows for smooth engine starting without putting a burden on the starter motor.
●All-aluminum ceramic plated cylinder adopted
Bore diameter: 63mm. Stroke 57.9mm (normal).
The ceramic plated cylinder has excellent durability, airtightness, and heat dissipation.
The cylinder is equipped with an oil outlet for an oil cooler, so by purchasing an oil cooler kit separately, the oil temperature rise can be suppressed.
The cylinder surface is black painted.
●Aluminum cast piston
High compression specification with a compression ratio of 12.5:1.
Piston designed for high performance and durability.
The piston top is finished with high precision by NC machining.
●Super Head 4V+R Bore Up Kit 181cc
The head kit, cylinder kit, and auto decompression camshaft kit are included in the set.

■Compatible Models
HONDA
GROM (JC61-1000001 to 1299999)
GROM (JC61-1300001 to)
MSX125SF
MSX125
*Simultaneous installation of a specified FI-Con (injection controller) is required to perform appropriate fuel adjustment for engine parts.

■Notes
*The image is for illustration purposes only. It includes products with different sizes and colors.
*Product design and specifications may change without prior notice. Please understand.
*Simultaneous installation of an injection controller that performs appropriate fuel adjustment for engine parts is required.
*SP Takegawa recommends purchasing a separate manifold adapter set with tapered processing that allows smooth intake from the normal manifold to the intake port.
*This product is made to order, so cancellations after ordering are not possible.
*This product is made to order and takes time for delivery. Also, without prior notice, the manufacturer may discontinue the product or change specifications. Please be aware of this beforehand.