Without a doubt: Rear Gear Swap. Ear-To-Ear grins immediate and constant. On all the time. SOTP feels like 66HP in a Gen 1, under $650 complete parts. 5th and 6th gears are useable, and 5th even pulls ! Zoom-Zoom-Zoom
No refills needed. No burned pistons.
NOS lasts seconds. Refill / babysit / costs
No refills needed. No burned pistons.
NOS lasts seconds. Refill / babysit / costs