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A hatch near the bottom-bracket area provides access for rebound
DayLightning mode emits lightning-like flashes to highlight your presence in the brightest of daytime hours
Gender/Age Adult Rotational Protection Yes Minimum Head Circumference 54 Color Concrete Grey Size Medium Visor Included Yes Multi Impact No Weight 370 Helmet Certifications Complies with the U
BB Inclusion No Crankset Material Aluminum Pedals Thread 9/16 Drivetrain Spacing Road Disc BCD Direct Mount Teeth 42 Primary Color Black Crank Spindle Diameter 28
The robust steel design is maintenance-free and ensures a long product life
Surly Single Cassette Cog 3/32" Splined 21t MFPN=00.2518.025.011 A hatch near the bottom-bracketSurly Single Speed Cogs. Designed as a singlespeed cog but may also be stacked and used with 9 speed shifter. Multi gear use will result in slower less crisp shifting than cogs designed for multi gear systems Fit Shimano freehub splines SCM 415 hardened chromoly steel Photo for color and material reference only Tooth Count 21 Cassette Body Type Shimano HG 7 Speed Drivetrain Speeds Single Speed 3 32" Material Steel
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