Big Bore Kits

Latest ATV Big Bore Kits Reviews – You could win up to $500 for reviewing products!

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  Athena Big Bore Kit

  WILLIAM in CA

  '05 WR250F -- What a Difference!

  With the Athena kit it's a whole 'nother bike! Roll on the power in 3rd and lift the front wheel. Power is smooth and she pulls right up to the rev limiter. Install was easy. Ceramic coated piston, quality gaskets. Excellent Product!

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  Wiseco Big Bore 440 Kit

  Richard in NV

  I would definitely recommend it

  I put this kit in my 04 XR 400. It gave it more power through out the rpm range. But way down low was where I really noticed an improvement. I can really lug the motor down through extreme technical sections on the trail now and with out having to slip the clutch. I noticed I could even run a gear higher which settled down the suspension which in turn made me able to go faster. I did have to use a ring compressor to install the piston though.

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  Cylinder Works Big Bore Cylinder Kit

  DEAN in -

  RM are just fantastic

  Fitted like a glove and power is amazing Valerie has been so much help in the ordering and also shipping, I live in Saudi but the average delivery from RM to my home is just 4 days!!! What moere can you ask for these guys are just excellent and I will continue using them and also recommending them to everyone who needs a supplier of this equipment. Thank you RM

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  Dubach Racing Engine Relocation Kit

  Mike in ID

  DON'T HESITATE JUST BUY IT

  I WAS A LITTLE SCEPTICAL ABOUT THIS PRODUCT. HOW COULD MOVING THE MOTOR 2.5mm MAKE THAT MUCH DIFFERENCE? AFTER READING SEVERAL REVIEWS ON LINE AND IN MAGAZINES I DECIDED TO GIVE IT A TRY. I COMBINED THIS PRODUCT WITH A MAXISS EN FRONT TIRE AND WOW WHAT A DIFFERENCE. I AM 250 lbs AND DIDN'T HAVE NEAR THE TROUBLE WITH THE "DARTING" THAT ALOT OF OTHER YZ OWNERS COMPLAIN ABOUT. THIS TOOK ME FROM REALLY LIKING MY BIKE TO LOVING IT. DON'T HESITATE. JUST BUY IT. INSTALL WAS FAIRLY EASY USING THE VIDEO ON THE DRD WEBSITE.

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