Black 22mm 7/8'' Motorcycle Handle Accelerator Quick Turn Throttle Twist Grips For Motocross Pit Dirt Bike Parts Universal Cam Color SpecificationsWhite Ring (Fast / Normal Use):Ratio: 2.6° per mm of cable travelOpening angle: ~55°Max stroke: 36 mmGives the quickest throttle response.Red Ring (Medium / Sporty Use):Ratio: 2.7° per mm of cable travelOpening angle: ~53° (progressive opening)Max stroke: 25 mmIdeal for general sporty road or track riding.Green Ring (Slow / Wet Conditions):Ratio: 2.9° per mm of cable travelOpening angle: ~60°Max stroke: 33 mm