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50 (ISO 559mm)
and the ultimate upgrade to the budget BBs sold with most other cranks that use HTII 24mm spindles
The Alienation Starship Guard sprockets is a Trekkie inspired 100% CNC machined 7075 aluminum sprocket
Manufacturer's Note: This Profile Racing component was colored by anodizing
some are silver
S&M Mid School 39t BMX Guard Sprocket Chainwheel - Matte Black - USA Made 36t 50 (ISO 559mm)This sprocket first appeared in S&M's 2005 catalog as the Bashguard Sprocket and then simply as Guard Sprocket in the 2006 catalog. Fast forward to June 2024 when S&M Pro Aryei Levenson started riding a used sprocket and single handedly created the demand that led to this slightly updated re issue. On this current version S&M has widened the crank clearance cuts a little, updated the teeth to a modern profile, and offset the teeth as well for better
US$ 173.22
US$ 12.95
US$ 14.95
US$ 12.95
US$ 14.95