17R-Stage+D Bore Up Kit 88cc 12V-Monkey (H Cylinder/R-10E)

Improvements to the port and fin shape from the conventional R-stage +D, and the adoption of a new profile camshaft, realize even higher power output at high RPMs!!
Based on the normal head shape, large diameter valves are adopted: Intake: 26mm / Exhaust: 22.5mm.
(12V Monkey normal valve diameter is Intake: 19mm / Exhaust: 16mm)
This is a Takegawa original cylinder head that adopts the optimal valve included angle, combustion chamber shape, and port shape in conjunction with the large diameter valves.
While the port diameter of the normal head is 14mm for both intake and exhaust, the port diameter of the 17R stage is larger, with Intake: 24.5mm / Exhaust: 19mm.
Compatible models
:Monkey Gorilla (Z50J-1600008～1805927)
:12V Monkey Gorilla (Z50J-2000001～/AB27-1000001～1899999)
:Monkey BAJA (Z50J-1700001～)
:Monkey R/RT (AB22-1000017～)
:12V DAX50 (AB26-1000001～)
:CD50 (CD50-1500001～)
:CL50 (CD50-4000001～)
:Benly50S (CD50-2200005～)
:JAZZ (AC09-1000030～)
:CRF50F (AE03-1400001～)
:XR50R (AE03-1000001～)
:CRF70F (DE02-1700001～)
:XR70R (DE02-1000001～)
:MAGNA50 (AC13-1000010～)
:Little Cub (C50-4300001～/AA01-3000001～3999999)
:Super Cub 50 (C50-0200001～0095210/C50-2100001～2299999)
:Super Cub 50 (AA01-1000001～1699999)
To fully achieve engine performance when installing the 17R Stage +D, the separate installation of a Takegawa carburetor kit and exhaust system will be required.
*The image is for illustration purposes only, and the design and specifications of the products shown are subject to change without notice. Please understand.