I by far do not know the whole Bandwith of High Comp Pistons, but I know that the RC51 really needs them.
Suitable for road or racing they deliver NOTICABLE more Power, on road or track.
Don't ask me for Gains, just trust me.

BIKE	PRICE (EXCL. VAT)	PRICE (INCL. VAT)	QUANTITY
Honda SP1 / RC51 (All years)	€ 576.30	€ 685.80
Honda SP2 / RC51 (All years)	€ 576.30	€ 685.80