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CR80 - 101.5cc Ported Big Bore kit
This is an AMA legal kit for the Super mini class. Fits CR80 1993 through 2002. And CR85 2003-2004 The kit includes: 101.5cc big bore (Nikasil plated) cylinder 52.00 mm bore. Cylinder head modified for the big bore piston. Wiseco Pro-lite 52.00mm piston, rings, pin and clips, top-end bearing and a top-end gasket set. This is a complete top-end. The exhaust port has been enlarged and polished, the transfer ports and intake ports have had the rough casting flaws removed, slightly enlarged and finished with a glass beaded finish. The glass beaded finish helps prevent fuel/air separation but also allows good air flow. Removing casting flaws and polishing the exhaust port will gain significant power in midrange and top-end without loosing any low end power. The bigger bore adds power all through the powerband. The combustion chamber of the head is polished also. The Nikasil plating on our re-plated cylinders is a minimum of .004" thick as compared to the stock thickness of .001"-.002"

Total for the kit: $550.00 if you send us your old cylinder and head for the core charge. Or $700.00 and we will refund $150.00 when we get your old cylinder and head for the core charge. We can ship right away if you pay with credit card. We can charge the $550.00 then do a $150.00 "authorization" on your card. The "authorization" does not charge to your card, it just puts a hold on the $150.00 We void the authorization when we get your cylinder and head. Free UPS ground shipping.
Click here to view exhaust ports on ported and non-ported CR101 Big Bore
Click here to view intake ports on ported and non-ported CR101 Big Bore