The pistons are taller and fit tighter,the spacer is to keep same port timing.If you rode one with the fix kit I'm sure you would spend the extra $250.Do some reading in the IQ section,lots of info
Mine had the mid range stumble 5 to 6 thou,the dealer was redoin the April flash and somehow found that the lower injector harness had a bad wire.One injector would sometime's fire sometime not when the motor called for it.Once changed has ran great.Might want to mention this to your dealer.They...
Install the Mnt Tek kit in it and have your ECM reflashed to the 08 Polaris map then ride it and see what you think.The kit is good for 5hp and 200rpm because of the extra compression you will get.If your V force reeds are chipped put your stock ones back in,they will last longer.You will like...