APTEC MOTORSPORT PERFORMANCE BIG BORE KITS

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Aptec Motorsport 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 Motorsport 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 APTEC FOUR STROKE BIG BORE OPTIONS:

Aptec offers a several options for your four stroke big bore needs

Buy a cylinder: You can purchase the complete big bore cylinder, gaskets, piston kit and other performance parts, and have them shipped to your door. This option eliminates down time, and allows you to tear down and reassemble your machine the same day! The cylinder is yours to keep. See our bolt-on big bore kits.

Cylinder exchange: Option two works the same as option #1. However, with option two you can send back your stock cylinder for a core charge re-imbursement. A £45 Express fee will be added to your invoice with this option.

Standard service: The third option will eliminate core or Express service fees. Ship your cylinder to Aptec, and have the same cylinder modified and returned to you. If you can wait for the two week turn around time this is the option for you. If you are interested in head porting with the stage three, this is one option.

Express service: For £45 more, you can send in your own parts, have them modified and returned to you. Aptec will have the job done in four working days! If you want a stage three with head porting and you are in a hurry, this is the option for you!