The Theory 8-Spline Spindles are a great replacement for any stock 8-spline spindle that may have unfortunately bit the dust. Theory has even taken it a step further and now offers different lengths to accommodate for pretty much every bike out there. Includes new spindle bolts as well.

• 138mm fits most 20″ BMX bikes
• 175mm fits most plus size bikes with around a 3″ tire
• 210mm fits most fat bikes with around a 4″ tire