Shimano
Shimano R203S/P Disc Brake Adaptor for 203mm Rotor, 51mm Caliper, 74mm Frame
MPN: ISMMAF203SPA · UPC: 689228283435
$30.00
Low Stock — 1 left
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🏪 Free pickup: 26 Essex St (Rear), Andover MA · 978-270-4895
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Shimano Disc Brake Adaptors allow the use of different sized rotors to your frame or fork.
- ✓ For 51mm caliper on 74mm frame using 203mm rotor
- ✓ Includes mounting hardware
| Brake Caliper Type | IS |
| Mount | Rotor Size | 180 Post | 203 Rotor |
Bike Size Guide
| Size | Rider Height | Inseam |
|---|---|---|
| XS / 47-49cm | 5'0" – 5'3" | 27" – 29" |
| S / 51-52cm | 5'3" – 5'6" | 29" – 31" |
| M / 54-55cm | 5'6" – 5'9" | 31" – 33" |
| L / 56-58cm | 5'9" – 6'0" | 33" – 35" |
| XL / 59-61cm | 6'0" – 6'3" | 35" – 37" |
💡 This is a general guide. SOTO Cycles offers FREE basic bike fitting with every new bike purchased and picked up locally — we'll make sure your bike fits perfectly.
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$30.00
Low Stock — 1 left