BlackSpire Mountain Chainrings
CARACTÉRISTIQUES DU PRODUIT
| Premium narrow-wide chainrings designed for 1 x 9/10/11/12-speed drivetrains that use a SRAM X-Sync direct-mount crank with a 148 mm Boost chainline |
| 3 mm offset optimized for a 148 mm Boost chainline |
| Made right here in Canada from super-tough 7075 aluminum, 0.313" thick, CNC-machined and heat-treated to T6 |
| Available in round or oval configurations |
| Ovality: 12%–13%, timing of 115° after TDC (top dead center) |
Specifications
Specifications
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Reviews
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