Super Head 4V+R Bore Up Kit 181cc GROM MSX125 Monkey 125

SP TAKEGAWA 01-05-0173 Super Head 4V+R Bore Up Kit 181cc GROM MSX125 Monkey 125 Engine Parts
■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 using two intake and two exhaust valves, the valve curtain area is expanded, achieving high intake and exhaust efficiency.
The original head design balances the center plug, valve挟み角 (valve included angle), combustion chamber shape, and port shape, which were implemented with the 4-valve conversion, achieving high output that cannot be obtained with normal heads.
The combustion chamber is precisely finished by NC machining.
●SOHC's Highest Class Intake and Exhaust Efficiency
Valve diameter: IN: 25mm x 2 / EX: 21.5mm x 2
Valve stem shaft diameter: IN and EX both 4.5mm
Uneven pitch valve springs are used to prevent surging at high RPMs.
The cylinder head surface is unpainted silver.
An inspection breather cover is included, so by purchasing a separate oil catch tank kit, engine internal pressure can be released.
The inspection breather cover, inspection cover, and L. cylinder head side cover are made of die-cast aluminum with barrel polished finish.
●Aluminum Forged Roller Rocker Arm
Reduces friction with the camshaft and achieves smooth operation! Maximizes output and allows for sustained output in the mid to high-speed range.
●Auto Decompression Camshaft
Enables smooth engine starting without placing a burden on the starter motor.
●All-Aluminum Ceramic Plated Cylinder Adopted
Bore diameter: 63mm. Stroke 57.9mm (normal).
The ceramic plated cylinder offers excellent durability, airtightness, and heat dissipation.
The cylinder is equipped with an oil outlet for an oil cooler, so by purchasing a separate oil cooler kit, oil temperature rise can be suppressed.
The cylinder surface is unpainted silver.
●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 precisely finished by NC machining.
●Super Head 4V+R Bore Up Kit 181cc
Includes head kit, cylinder kit, and auto decompression camshaft kit.

■Compatible Models
HONDA
GROM (JC61-1000001～1299999)
GROM (JC61-1300001～)
MSX125SF
MSX125
MONKEY 125 (JB02-1000001～)
MONKEY 125 Thailand Model (MLHJB02)
*Simultaneous installation of a specified FI Con (injection controller) is required for appropriate fuel adjustment for engine parts.

■Precautions
*Images are for illustration purposes only. Includes products with different sizes and colors.
*Product design and specifications are subject to change without notice. Please understand.
*Simultaneous installation of an injection controller for appropriate fuel adjustment for engine parts is required.
*SP Takegawa recommends purchasing a separate tapered manifold adapter set for smooth intake from the normal manifold to the intake port.
*This product is made to order, so cancellations after ordering are not possible.
*Since this is a made-to-order product, it may take some time for delivery. Also, please note that the manufacturer may discontinue the product or change specifications without prior notice.