headstock bearings seals bmw s1000 s 1000 2008 2014 Suzuki LT125 then it's a no brainer

then it's a no brainer to get a new coil on the quad

3NS-82310-10 or 4KJ-82310-10 on a YFM250 for the above models and years of manufacture

If you are having spark issues on your Yamaha FZ700 then the ignition coils could be the culprit

Kawasaki KR1 S (KR250 C) (1990-1991)

headstock bearings seals bmw s1000 s 1000 2008 2014 Suzuki LT125 then it's a no brainerBrand new set of headstock steering bearings with seals to fit: BMW S 1000 RR (2008 2014). This set of head stock bearings are taper roller style and have been manufactured to replace the original set of steering bearings on an S 1000 for the years and models shown above. Top and bottom headstock bearings with seals are included. We also stock without seals, please see our other listings for these. Both sized ID30 x OD55 x WTH17. Seals aren't included