When you lighten up the valve train parts on an engine, it makes less work for your valve springs which means more RPMs and less spring wear. Our new aluminum retainers save 10.8 grams over the stock retainers, this all adds up to more horsepower.
***ONLY FITS 2000-2009 120 WITH SUZUKI ENGINE AND ALL POLARIS 120'S****
Sold as pair.
NOT LEGAL FOR STOCK CLASS