BDL Tru-Fit Timing Belts Ducati 748 / Monster S4 / S4R / ST4 The BDL Tru-Fit Timing Belt provides an exact-fit replacement for factory belts, designed to ensure precise engine timing. Constructed to meet high quality standards, it is built for long-lasting service and reliable performance in demanding riding conditions. This belt is an essential component for maintaining optimal engine function. Features: Designed to match original equipment specs Built to strict manufacturing tolerances to ensure exceptional reliability and extended service life Provides smooth, reliable timing operation to help safeguard your desmodromic valve train Sold in pairs Note: Note: For 2001 748 models check OE belt number and number of belt teeth. Some use a 95 tooth belt and some use a 93 tooth belt. Always follow recommended service intervals and replacement procedures when installing new timing belts.