S&S CYCLE Drive Belt - 137 Tooth - 1" - Touring/Softail/Sportser 560-0393 Automotive/UTV Tires - On Road 8:1 for the ultimate in

8:1 for the ultimate in street performance

44% flow increase on supply side and 58% flow increase on scavenge

Includes outer drive gears

Has 1-7/8" throat at the butterfly and a 9/16" venturi

cylinder mounting studs

S&S CYCLE Drive Belt - 137 Tooth - 1" - Touring/Softail/Sportser 560-0393 Automotive/UTV Tires - On Road 8:1 for the ultimate inDrive Belt 137 Tooth 1" Touring Softail Sportser Gates Poly Carbon X7N material, Robust carbon tensile cord combines minimal stretch with extraordinary strength and load carrying capacity, Durable polyurethane construction resists chemicals, oil, pollutants, and abrasion, Made in the USA