N-MP-09532C 70cc Kit 48mm Cylinder, Piston, Gaskets, Jet Euro 50 / RS 50 Big Bore Kit. SKU: N-MP-09532C N-MP-09532A 70cc Big Bore 48mm Head SKU: N-MP-09532A SYM scooter upgrade by MRP Works on Jet Euro 50 Air and RS 50 Air Does not work on DD or Fiddle To find a local dealer visit www.MRP-SPEED.com
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tpvalley
February 23rd, 2009 at 3:32 pm
I have never seen a cast iron kit with auxilliary exhaust ports.
what kind of power from the big bore kit with exhaust and 21mm carb? 8bhp?
tpvalley
February 24th, 2009 at 9:48 am
I like the look of that.
Did I see right, did it have auxiliary exhaust ports aswell as main port?
Single ring piston; what rpm is peak power developed? how long between ring changes?
How does it compare to malossi mhr for power?
obviously if its cheaper and giving good power it can be better bang for buck than malossi!
hacks2007
February 25th, 2009 at 4:54 pm
I have a de-restricted 2002 model rs50, and i was just wondering wether it was a good idea to put a big bore kit on it. is it unhealthy for the engine?