Shun Crank Arms w/ 42t Ring & Double Guard - 170mm - Black 1-1/4" S5/S6 When it came to designing

When it came to designing an all-new hubset focused at trail/transition riders

The KMC S1 is a single-speed chain suitable for use with any single speed drivetrain such as BMX

Material: Steel

This has a chrome plated finish and is not stamped (Tange BB's have not been stamped for several years now)

Style: Flangeless

Shun Crank Arms w/ 42t Ring & Double Guard - 170mm - Black 1-1/4" S5/S6 When it came to designing*READ FULL DESCRIPTION This is a set of 170mm crank arms with 42t double guarded chainwheel. The arms (one left and one right) are forged steel, the chainwheel is steel and the guards are plastic. The Chainwheel is designed for 1 2x3 32 multi speed chains. The arms fit standard JIS square taper spindles. Does not include bottom bracket or spindle bolts nuts.