View Full Version : polini top end

05-29-2008, 03:15 PM
anyone here used the polini 80ccm top end kit(aluminum, 2 ring)? they claim 19hp and 12,500rpms. ive used thier products before and always been pleased with quality, performance, and longevity of thier kits.

05-29-2008, 03:34 PM
hi yes i have one fitted now, revs to about 12,000 i doubt they put out 19bhp. but they are a good product and i have been very pleased

05-29-2008, 06:08 PM
hey mate i can order one of the polini 80cc BBK for you
if you are interest let me know.

cheers keeton

05-29-2008, 06:55 PM
what's the difference in performance between the castiron, and the aluminom?

05-29-2008, 07:28 PM
hey mate i can order one of the polini 80cc BBK for you
if you are interest let me know.

cheers keeton

Mate. stop trying to "order" things for everyone. I'm sure however much you can get it for, is more expensive than it can be found online. If someone wants to buy something from you, I'm sure they will ask you. However until then, i'm sure I'm not alone in saying that it would be appretiated if you could stop posting in every single thread tring to sell stuff. it's just spam. :pissed:

rs50 '03 steve
05-30-2008, 05:05 AM
to answer your question cast iron is heavier and a cheaper material than alloy.

05-31-2008, 08:23 AM
Generally iron bore kits are designed for road use, less power but more durable, and are mostly of a twin ring design.

An alloy bore kit will be lighter, more powerful, but it will not last naywhere near as long. I'm sure if i got the Metrakit SP bore kit my bike would have been quite a bit quicker, but i have had about 3500 trouble free miles with my iron , twin ring bore kit...

Aprilia af1
06-03-2008, 10:49 AM
In comparison the cast iron bore kits are about the same as the aluminium bore kits, as on both types the pistons are aluminium, i have a polini 70cc cast iron and an aluminium 70cc polini with both aluminium pistons, power feels exactly the same on both but cast doesn't radiate the heat as well as aluminium.