Power-Valves.
Designed to fit RGV250 91-96 and Aprilia RS250, Will fit earlier RGV and RG125FUN. (note will work in only 2 stages with VJ21)
Made from very high grade CNC billet aluminium that’s renowned for its toughness at extreme high temperatures.
A radius that is perfect across all three blades of the valve resulting in a perfect exhaust port profile; this in turn improves the gas flow from the cylinder.
The new design incorporates the power-valve pin as part of the centre blade meaning that it is impossible for the pin to fall into the cylinder, treated with a hard, self lubricating, ultra low friction coating.
Superior life expectancy and operation.
The new power-valves come complete with replacement caps. These have been redesigned and the shaft positioning has been altered to improve the position in which the power-valve sits in the cylinder. These are also very wear resistant and will not elongate like the original items which causes the fixed blade of the power-valve to enter the cylinder a touch the piston resulting in costly internal engine damage.
The weight saving is also significant compared to the original items. The new design power-valve weighs just 47grams compared to 60grams with the Suzuki ones, that’s a total saving of 52grams with all four new power-valves.
In some of our tests we monitored a 6hp increase with good mid-range stability on a standard motor. Results may vary depending on your state of tune and condition of current valves & ports etc.
The only modification you MAY want to carry out is to shorten your PV springs by a couple of coils to return the valve to it's standard freedom of operation. The thicker pin on these valves compress the spring a bit harder otherwise.
See
http://www.rgv250.co.uk/powervalve.htm for further set up info.
The price here is for 4 valves, 4 caps and 6 screws.
£480 inc VAT---VAT is deducted for countries outside the EC