Reduction Boss Machining - We have 20% 40% 60% 80% primary's and 10% and 15% secondary gears on the shelf for 420/500/520 machines along with plenty of stock and billet baskets. If
420/500/520 Secondary (Rear) Reduction 15% – Reduction Boss
Reduction Boss Machining - PSA: the standard 420/500 14.5% and 27.5% primary has been replaced with a billet 20%. Only available at Reduction Boss. Thanks for all the continued support from our awesome customers! | Facebook
420/500/520 Primary 40% Reduction – Reduction Boss
420/500/520 Primary 40% Reduction – Reduction Boss