PERFORMANCE BIG BORE KITS

		Big Bore Kit LINKS Big Bore Kits Introduction 2 Stroke Big Bore Kits 4 Stroke Big Bore Kits ATV Big Bore Kits

APTEC brings you over 100 years of coating technology to their full line of Performance Big Bore Kits. For leisure or for the most demanding off-road racing. When buying an APTEC Big Bore Kit you are purchasing the best in coating technology and workmanship the industry has to offer.

This page explains the options we offer, but if you would prefer to go straight to the kits for your machine, please use the links in the yellow box on the right.

THE MAX POWER SERVICE

When you order a big bore kit from APTEC, your cylinder will be completely disassembled, parts inspected for wear and documented. (if items need repair we will contact you first).

After disassembly your original plating will be removed chemically to expose the aluminum casting. Then your cylinder will be chemically cleansed and precision mechanically prepared to the specific size required, this includes all necessary port adjustments made to Aptec's big bore specs for your make and model. Your cylinder will be coated with Apticote 2000 nickelceramic bore coating offering you the best in oil retention, and heat dissipation giving your motor the edge required for longevity and performance. Your cylinder will then be diamond honed with the latest honing technology, match fit to your new big bore piston.

Cylinder heads are modified to accept the larger displacement; these modifications take in to affect the octane gasoline you run as well as how you would like the bike to respond.

Our qualified technicians will clean, machine, and re-install your powervalve assembly, timed appropriately. Carburetor jetting and gearing changes are generally necessary for optimum performance.

CHOOSE YOUR LEVEL OF PERFORMANCE

We are very pleased to offer our Big Bore Kit customers three different levels of performance based on your needs and our Apticote 2000 coating technology:

Big Bore Kits include all the above modifications, APTEC's Xtreme coated piston kit, and top end gasket kit for complete assembly. Stage Two kits also feature our Xtreme head coating. This kit offers you the best in extra protection for your piston, and enhanced combustion with our advanced piston dome and cylinder head coating. For more information on these Xtreme coatings please click here!!

		Big Bore Kit LINKS Big Bore Kits Introduction 2 Stroke Big Bore Kits 4 Stroke Big Bore Kits ATV Big Bore Kits

APTEC A-MAX kit: The first kit that we consider a big bore is 2mm over the original stock bore size. We refer to this as a A-MAX Kit. This kit keeps the characteristics of your motorcycle, but increases the power delivery throughout the whole rev range. If you enjoy how your currently acts and feels, but are looking for more power, then this is the kit for you.