Hit 37 on my bike today. It has: CNS carb, NGK spark plug & wire upgrade, Jim's (Manic Mechanic - Pirate Cycles) billet intake, no chain tensioner, and the 36T rear sprocket, c-clip on the top notch because it still seems to run rich at WOT.
Was happily cruising & still gaining along a flat stretch, until the carb vibrated off and I found that the stock CNS filter had a big tear in the rubber. The stock filter doesn't seem to be made for gasoline applications, as I can see disintegrated rubber specks in the carb intake. I had previously only barely hit 34 and only on one day, so I'm guessing that there is some additional restriction in the stock CNS filter...
Searched for a long time and found what I think will be an excellent replacement. Please note that you'll need some clearance between the seat post and the back of your engine. I have the front engine mount only using the expanded clamp for larger frame tubes and 2 of the stock clamp blocks on the rear engine mount with 4" M6 bolts.
You can get this filter as rubber-only cap ($17.99) or go with the pretty chrome cap ($23.99) like I did. You can order these from any AutoZone, use the dealer locator from the K&N site, or order online. Filter flange diameter on the CNS carb is 1-1/4".
62-1380 - K&N Crankcase Vent Filters, Vent Filter
62-1390 - K&N Crankcase Vent Filters, Vent Filter
Was happily cruising & still gaining along a flat stretch, until the carb vibrated off and I found that the stock CNS filter had a big tear in the rubber. The stock filter doesn't seem to be made for gasoline applications, as I can see disintegrated rubber specks in the carb intake. I had previously only barely hit 34 and only on one day, so I'm guessing that there is some additional restriction in the stock CNS filter...
Searched for a long time and found what I think will be an excellent replacement. Please note that you'll need some clearance between the seat post and the back of your engine. I have the front engine mount only using the expanded clamp for larger frame tubes and 2 of the stock clamp blocks on the rear engine mount with 4" M6 bolts.
You can get this filter as rubber-only cap ($17.99) or go with the pretty chrome cap ($23.99) like I did. You can order these from any AutoZone, use the dealer locator from the K&N site, or order online. Filter flange diameter on the CNS carb is 1-1/4".
62-1380 - K&N Crankcase Vent Filters, Vent Filter
62-1390 - K&N Crankcase Vent Filters, Vent Filter
