Headstock Bearings: KTM Supermoto 640 (2000-2006) Honda CBR300 To replace OEM: 5EB-82310-00 or

To replace OEM: 5EB-82310-00 or F6T549

Kawasaki ER-6F (ABS) (EX650 D) (2009-2010)

Honda NT 650 Bros (RC31) (1988-1992)

The models are SZ to SD

Headstock Bearings: KTM Supermoto 640 (2000-2006) Honda CBR300 To replace OEM: 5EB-82310-00 orBrand new set of headstock steering bearings to fit: KTM Supermoto LC4 E 640 (2000 2002). KTM Supermoto LC4 640 (2003 2006). 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 Supermoto 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 require different