Silver
Roller Rocker Arm: Forged Aluminum
Piston: Forged Aluminum
[Specification]
•Engine Displacement: 181cc
•IN: 25mm x 2/EX: 21.5mm x2pcs.
•Valve Stem Shaft Diameter: 4.5mm for both IN/EX
•Bore Diameter: 63mm
•Stroke: 57.9mm (STD)
•Compression Ratio: 12.5: 1
[Product Contents]
•Super Head 4V + R Bore Up Kit 181cc
•Large Capacity Injector
•Spark Plug
It adopts 1 camshaft 4 valve head, achieving easy-to-handle output characteristics and high output!
?Super Head 4V+R (1-camshaft 4-valve)
It enlarged the valve curtain area by making 2pcs.
each intake and exhaust valve, and it achieves high air intake and exhaust efficiency.
It achieves high power that can not be obtained with STD head because of the original head shape, and it is designed to balance the center plug, valve pinch angle, combustion chamber shape, port shape with the introduction of 4 valves.
The combustion chamber is finished with high precision by NC machining
Valve diameter IN:25mmX2/EX:21.5mmX2
[Valve Diameter]IN:25mm×2/EX:21.5mm×2
Valve Stem Shaft Diameter 4.5mm (both Intake/Exhaust).
It prevents surging at high speed by adopting uneven pitch valve spring.
It applies black paint on the cylinder head surface.
Inspection Breather Cover,Inspection Cover,L. The inspection breather cover, inspection cover are machined elaborately by aluminum cut-out with beautiful chromium plating.
The left cylinder head side cover adopted aluminum die-cast with barrel polishing
Reduced frictional resistance with the camshaft for smoother operation.
Maximize power output and maintain power at mid- to high-speed ranges.
Camshafts/cylinders/pistons
Included Camshaft10/15DAuto Decompression Camshaft
Auto decompression camshaft.
It does not burden the cell motor and it is possible for a smooth engine start.
Bore diameter:63mm, stroke 57.9mm (Normal)
Bore Diameter:63mm Stroke:57.9mm (STD).
The ceramic plating cylinders are excellent in durability, air tightness and heat dissipation.
Unpainted silver cylinder surface.
It applies black paint on the cylinder surface
Aluminum casting Piston.
It is a high compression specification adopting Compression Ratio 12.5:1.
It is a piston pursuing high performance and durability.
The piston top is finished with high precision by NC processing
• Super Head 4V+R Bore Up Kit 181ccIt is a set of head kit, cylinder kit, Auto decompression camshaft kit.
*It is necessary to install an injection controller that adjusts the fuel appropriately for the engine parts.
*In SP TAKEGAWA, it is recommended to purchase a tapered manifold adapter set that allows smooth intake from the normal manifold to the intake port.
*It is necessary to install the FI Con 2 (Injection Controller) that adjusts the fuel suitable for the engine parts at the same time.
*Please note that the specifications of the product may change due to manufacturer reasons.
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