Below are the available bulk discount rates for each individual item when you purchase a certain amount
● PROGRESSIVE DOUBLE VALVE SPRING & RETAINER SET
● This Progressive Double Valve Spring & Retainer set comes from our SP200R racing series engines with a very balanced spring pressure rate to avoid cam lobe damage as much as possible with lifting your RPM power band up until 14,000RPM without any issue.
This set comes complete with 2 outer springs, 2 inner springs and 2 lighter as stock steel 5mm valve retainers to make a complete conversion possible from the genuine single valve spring in to a double valve spring setup…
All prices are in THB