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570 689-4561

 
Cylinder Kits 2-13-25

Air Cooled & Marine

 
 
 
 
Modified Big Bore Kit  
 
Our most powerful RC 260 hop up. Cylinder is milled for higher compression, intake and exhaust timings are raised with larger machined exhaust window, lightweight relieved and skirted piston for highest RPM and better breathing , piston ring, gaskets and clips. This kit will update your 230 RC with the addition of a longer wrist pin and will fit 260 RC's and inferior Zenoah clones $165

Big Bore Kit  
The fastest and cheapest way to add power to your Zenoah 230 RC is to make it a big bore 260. This Zenoah kit comes complete as shown and will also work on the Zenoah "clone" engines that need repair because of poor quality cylinder chroming.  Do it right the first time...insist on genuine Zenoah parts.  Bore Up Kit. - $45

Zenoah 290 RC Top End Repair/ Upgrade Kit

 
This kit will repair the 4 bolt top end of a 290RC or upgrade a  240 or 270 RC to a 290 RC all parts shown are included. $65

Zenoah 240-270 RC Top End Repair Upgrade Kit  
Zenoah 240-270 RC top end repair/ upgrade kit. This kit will repair the 4 bolt top end of a 270 RC or upgrade the 240 to a 270all parts as shown included  $55

Marine  

320 PUM Power Kit

 

Zenoah 320 PUM Power Kit comes with a modified cylinder to increase intake, exhaust timing and adjust head clearance, a modified piston, piston ring, wrist pin, clips, BHHP engraved water jacket with o rings and drilled fittings, intake block, all gaskets, NGK spark plugs and hardware to complete the install. $240
(If water jacket,  fittings, O rings and mounting screws are not needed deduct $20 from the kit price)

320 PUM Top End Repair Kit  
Zenoah 320 PUM repair kit. Kit includes instructions and all parts shown. $75

300/310 PUM Power Kit  
300/310 PUM Power Kits
Both kits come with a modified cylinder to increase intake, exhaust timing and adjust head clearance, a modified piston, piston ring, wrist pin, clips, BHHP engraved water jacket with o rings and drilled fittings, intake block, all gaskets, NGK spark plugs and hardware to complete the install.
300 PUM kit   $235
310 PUM kit   $250
For the 310 kit, add a trued Zenoah +2 crank for $50

 


290/300 PUM Top End Kit  

290/300 PUM Top End Kit, all parts as shown.  $70
   

260 PUM Pro-Mod Kit

 

This upgrade kit will give a nice power increase for a sport boater or weekend racer.

The kit comes as shown and includes a Zenoah cylinder that has been modified for compression, exhaust and intake timing with transfer port pocket porting, a lightened relieved Zenoah piston, new piston ring, clips, engraved water jacket with   drilled fittings, intake block, all o-rings, mounting hardware, gaskets and spark plug. $195


260 PUM Top End Kit  
Kit include all parts as shown $46

231 PUM Top End Kit  
Kit include all parts as shown $32