A JT sprocket in high-quality C49 steel with an excellent finish. THE RATIO AS FIRST FITTED (FACTORY PRODUCTION) KAZE-R 115 (99) Front 13 teeth rear 44 teeth TECHNICAL ADVICE. By changing the ratio the manufacturer recommends we get a different performance — a different behaviour — from the motorcycle. HIGHER TOP SPEED - FUEL ECONOMY (SUGGESTED FOR TOURING) Fewer teeth at the rear. More teeth at the front. MORE ACCELERATION - SUGGESTED FOR TOWN. More teeth at the rear. Fewer teeth at the front.