S&S
S&S, M8 rocker arm shaft set
S&S, M8 rocker arm shaft set
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Upgraded replacement for the OEM rocker shafts. With a 66% strength increase when compared to the OEM shafts for better reliability; especially in high lift/stress applications like exist with high-lift cams. Bearing quality steel and precision centerless ground. OEM replacement reference 17300053 (front exh; rear int); 17300055 (front int; rear exh) and 17300059B (set). Note: S&S advices to install these rocker arm shafts in combination with MCS 588917 rocker arm tower stud & nut kit.
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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.