X021 Headset Spacer Kit MTB OC3OC profiled headset spacers kit. Compatible with the OC ST MP20 MTB stem (previously OC3) and the ST RP21 Road stem (previously OC1) (without internal cabling through the headset). Includes: 2x 10mm spacers 2x 5mm spacers To find the right component for your bicycle, introduce your barcode number in the designated field or consult your models Blue Paper technical manual and use the browser to introduce the article code. Consult the bicycle or
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