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cylinder kit and cylinder head 90cc Naraku v2
Location: Shortcut to Homepage /racing parts 50cc/*motor/cylinder kit and cylinder head 90cc Naraku v2
cylinder kit and cylinder head  90cc Naraku v2

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cylinder kit and cylinder head 90cc Naraku v2

special racing, with a big valves racing cylinder head

the racing cylinder head with big valves can fit cylinder kit from  51mm to 52.4mm (85 to 90cc)

big valves  :

- exhaust valve  = 20,00mm

- intake valve  = 23,00mm

those saying 90cc kit without giving the cylinder bore usually sell smaller bore kit, a 90cc kit must have a 52.4 mm bore cylinder, a 85cc kit a 51mm cylinder bore, it's easy to find this with some simple mathematics .

on the V2, the essential improvements are made on the piston, for better performances, and lubrification of the clinder pin .
a hole have been made on the cylinder to plug accessories like oil or temp pressure .

external diameter of the cylinder skirt 54,5 mm, so you can mount it without grinding you cranckcase on almost all the chinese scooter with short motor (10 inches wheel) and without problem on long motors (12 inches wheel) 

if you're not sure, check the cranckcase hole, it must be 55mm or up.

complete, with gaskets, piston, cylinder, cylinder head, piston pin, clips, segments .

 best quality, made in Taiwan, not a cheap chinese kit that you can find almost everywhere !

50cc to 90cc
for chinese scooter, 50cc to 90cc, 139QMA, 139QMB, gy6 , motors, Peugeot V-clic,  Revatto, jonway, Roadsign, Aztral, kinroad, Yiying, baotian, znen, Gowinn, jmstar meiduo, haizhimeng, wangye, Jialing, vonroad, Hanglong, Jincheng, Zongshen, Linhai, Benzhou, Dazon, Huibang, Zhonghyu, Shenke, Wacox, etc...

Use on private road only !

all the tutorials and informations on  http://www.scooterchinois.fr/modules/newbb/viewforum.php?forum=98

important : all the Kymco new dink and Kymco People which have a different rockers arm bracket must change if for a standard one like this   click here


the arrow on the piston aim at the exhaust .

don't forget to buy our thickness gauge to set up your valves gap : 

don't forget to re set your carburator by using a larger main jet, usually a 95 can fit, a too lean carburation will overheat your motor and seize or destroy it .

check at your spark plug regularly , if your carburation is too lean , the spark plug electrode become white .

(Based on 1 Reviews)

Price: €219.00ttc

Product Code: NK100.52
In Stock
Quantity: Add to Basket