headstock bearings ktm adventure 640 1998 2007 Aprilia MX50 By upgrading your coil you'll

By upgrading your coil you'll also get a better spark on original coils that don't have spark issues

We also stock in 317mm length - Please see our other listings for these

Yamaha YFM 700 R Raptor (2006-2009)

To replace OEM: 58200-44B01 / 58200-44B02

headstock bearings ktm adventure 640 1998 2007 Aprilia MX50 By upgrading your coil you'llBrand new set of headstock steering bearings to fit: KTM Adventure R 640 (1998 2005). KTM Adventure LC4 640 (2006). KTM Adventure 640 (2007). This set of head stock bearings are taper roller style and have been manufactured to replace the original set of steering bearings on a KTM Adventure 640 for the years and models shown above. Top sized: 29mm x 50. 25mm x 15mm. Bottom sized: 29mm x 50. 25mm x 15mm. All sizes set out ID x OD x Thickness. If you