PROX valve spring kit exhaust for KAWASAKI KX 250 F and SUZUKI RM-Z 250 from 2004 to 2016

PROX offers this valve spring kit exhaust for KAWASAKI KX 250 F and SUZUKI RM-Z 250 from 2004 to 2016. The camshaft opens the valves and the springs close them. At high revs the spring must bring the valve back very quickly: if it is tired, the valve can no longer keep up and “floats”.

Why replace the valve springs?

The benefits:

• Safe running at high revs again.
• Essential with a hotter camshaft or steel valves, which are heavier than titanium.
• Quality steel springs keep their strength longer.

Why choose PROX?

ProX, the Dutch engine-parts specialist since 1975, has its parts made in factories that also supply the manufacturers: OEM quality at a more affordable price.

When should you replace the valve springs?

Hard hot starting, valve clearance that keeps closing up or a noisy timing chain: the valve train is wearing.

Specifications and fitting tips

• Application: Exhaust
• Material: Steel
• Replaces the OEM valves and springs
• Nitrided steel valves for greater durability and less wear in extreme conditions

Cross-Mania tip: Check the guides and seats before reassembly and lap the valves in. Titanium valves must not be fitted on worn seats.

Compatibility

Check the exact model and year of your bike in the list below before ordering.

Fits:
KAWASAKI KX 250 F 2016
KAWASAKI KX 250 F 2015
KAWASAKI KX 250 F 2014
KAWASAKI KX 250 F 2013
KAWASAKI KX 250 F 2012
KAWASAKI KX 250 F 2011
KAWASAKI KX 250 F 2010
KAWASAKI KX 250 F 2009
KAWASAKI KX 250 F 2008
KAWASAKI KX 250 F 2007
KAWASAKI KX 250 F 2006
KAWASAKI KX 250 F 2005
KAWASAKI KX 250 F 2004
SUZUKI RM-Z 250 2006
SUZUKI RM-Z 250 2005
SUZUKI RM-Z 250 2004