S&S Cycle
S&S, chain drive MR103 camshaft kit
S&S, chain drive MR103 camshaft kit
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Complete kit with two chain driven camshafts with installation kit that includes a gear cover gasket; cam bearings; retaining ring; o-ring and thread locker. Note: Not compatible with S&S 79cc heads. Note: Owners of 1999 Twin Cams must separately purchase the splined 00-06 style driven gear (503575 Andrews). 00-06 models can re-use stock 34 tooth driven gear. Note: When using 99-06 chain drive cams for lifts over .510"; S&S strongly recommends that the stock chain drive be upgraded to the S&S gear drive or to convert to the 06-up hydraulic chain tensioners.
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Why buy from Forty5°
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Verified compatibility
Every part we ship is checked against your bike's platform, year, and engine. If it doesn't fit, we tell you before you check out.
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Workshop installation
Book a serviceHave us fit it. Book installation at parts intake — same-day on most jobs, master techs only.
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Founder-led aftersales
Get in touchQuestions after fitment? You'll speak to the people who installed it. We answer email and WhatsApp seven days a week.