Kirby Powersports and Service

11/28/2025

New stickers arrived today!

11/24/2025

Carb model YFZ450 is a MONSTER! probably one of the fastest quads I’ve ever ridden. So this quad got the following treatment.

-fully rebuilt FCR carb with R&D powerbowl 2 and flex jet a/f adjuster and jetted
-valve clearances adjusted
-new DASA exhaust
-oversized radiator
-tether installed
-new iridium plug

11/18/2025

Yamaha Timberwolf 250 top end rebuild. All new OEM parts/gasket. Fresh cylinder bore job. Fresh valves, seats cut!

Valve seals were shot allowing a ton of oil into the combustion chamber and caused massive build up in the head. Cam chain guides were toast as well.

11/06/2025

Runs good!

11/06/2025

Yamaha RT 180 back to life! Fresh bore, wiseco piston, reeds fixed.

10/21/2025

Ready for iron man! Had to replace cam chain guides and port match the intake to the head.

09/24/2025

New winch and CVT Belt installed on customers 2006 Polaris sportsman 700 twin EFI.

09/11/2025

09/11/2025

1 day turnaround. Motor rebuilt and back in the quad running. Along with some water protection.

08/20/2025

A little porting fun!

07/20/2025

More mini quad work! Getting the machines dialed and ready for Dutch and Briarcliff. Impact solutions is going through the rear shock. We have a new rear brake line and caliper. Fresh ported 70 2fast motor! New precision stabilizer on the 90
Eric Kirby