- Stone Premium Anodised Aluminium Single 55T x 144BCD Chain Ring.
- Suitable for single speed and track 1/8" applications only.
- CNC Construction from 7075-T651 Hi Strength Aluminium.
- Stiff 4mm Plate, recessed bolt holes.
- 5 x Chainring Bolts included.
- Hardness HB150, CNC precision to 0.03mm
- Weight 158 Grams, China.
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