Shimano
RD-M3100
The Shimano RD‑M3100 is a reliable 9‑speed SHIMANO SHADOW RD rear derailleur designed for smooth shifting and improved chain stability on modern mountain and hybrid bikes. Its low‑profile design reduces the risk of damage on the trail while delivering consistent performance.
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9‑speed SHIMANO SHADOW RD design
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Low‑profile construction for reduced impact risk
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Total capacity: 45T
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Maximum low sprocket: 36T
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Minimum sprocket: 11T
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Maximum front difference: 22T
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Standard mount
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Adjustment barrel included
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Cage length: SGS (long cage)
Shipping information
Ships in 2–3 business days with free delivery across Canada on orders over $99. Same‑day pickup available Tue–Sat (closed Sun–Mon).
Returns & warranty
Enjoy hassle‑free returns within 30 days on unused items in original packaging (excludes bikes and sale items). Free in‑store returns anytime.