More power for 4.2hp grc rx

What performance parts can I buy to make a 4.2hp grc rx faster....What exhaust....Have 4 petal intake already...

4.2hp RX are nice but why didn't you just buy a more horsepower bike in the begining so you don't have to spend more money buying upgrade parts?

If you're racing there's only one more thing that you can do to the bike: Race pipe. If you're not racing then you can do almost anything to it.

If you really think you need more power then you're going to want to buy a Series II case for it or consider a water cooled 8.5 motor etc.

Wheely, it was the only RX for sale in the US. If he wanted an RX without waiting on ordering one, he had to buy the 4.2.

Because it was the only one I found,by the way it's not about the money,for me it's about having fun and looking for new parts to upgrade the bike....

Erica I order a race pipe, wave rear rotor and clucth tool kit from rick at minimoto.I also spoke with Mr.Giannini today for a long time,he is going to build me a stage2 motor with all the goodies,also going to get front and rear hydraulic brakes...I'm having sooo much fun I can wait.. by the way my name is Douglas.

Oh ok, I didn't realize the RX are hard to find. I want to know the seat height on the RX, is it pretty much the same as the GP? For sure the RR are much higher. Thanks

Seat height is 15.5", 36" long and 10'' wide