Item | Applies To | Product/Link | Service Interval | Comments |
Motor Oil | All Ks | Mobil 1 15W-50 Synthetic | 10,000 Miles 16,000 km | Since K bikes have a dry clutch, you do not need to use special motorcycle engine oil. Car oil is fine. |
Shell Rotella Synthetic 5W-40 | 10,000 Miles 16,000 km |
Castrol GTX 20W-50 | 6,000 Miles 10,000 km |
Oil Filter | All Ks | Bosch 72161 | When oil is changed | If there is a sticker on it then be sure to remove that prior to installation. |
Transmission Gear Oil | All Ks | Mobil 1 Syn Gear Lube LS 75W-140 | 20,000 Miles 32,000 km | Though BMW recommends 75W-90, 75W-140 tends to make K bike transmissions a bit less "clunky" when shifting. |
Final Drive Gear Oil | All Ks | Mobil 1 Syn Gear Lube LS 75W-90 (or 75W-140) | 20,000 Miles 32,000 km | |
Moly Gear Oil Additive | All Ks | Guard Dog GD-421 Moly Additive | When transmission or final drive gear oil is changed | Moly additive helps reduce friction and wear. It takes several hundred miles for it to "wear in" but in a K bike transmission you will notice smoother shifting using GD-421. Transmission: 3.6 fl.oz. (106 CC) Final Drive: 1.1 fl. oz. (32 CC) |
Fuel Filter | All Ks | NAPA Gold 3032 | 20,000 Miles 32,000 km | Remove the front hose clamp first and then you can do the rest outside of the tank. |
Air Filter | All Ks | BMW Part 13721460337 (Mahle LX75) | 40-50,000 Miles 65-80,000 km | BMW recommends 24,000 miles but K air filters are very oversized so changing the air filter on a longer interval is OK. |
Fork Oil | All Ks | Honda SS-8 | 20,000 Miles 32,000 km | Do not over-tighten drain screws when reinstalling. The threads strip easily if you're not careful. |
Spline Grease | All Ks | Guard Dog GD-525 Moly Grease | 40,000 Miles | For K75s & K100s, it's a good idea to lube the final drive splines every time you install a new rear tire. |
Radiator Coolant | All Ks | Any (that is suitable for use with aluminum engine parts - most are these days) | Every two years | Pre-mixed 50/50 is OK but 60/40 water/coolant has better hear transfer. Be sure to use only distilled water in the cooling system. |
Brake Fluid | All Ks | Any | At least every two years although annually is preferable | Use only DOT 4 brake fluid. |
Brake Pads | K75/K100 Rear for 4V K bikes | EBC FA-18 | Minimum pad thickness: 0.06" 1.5 mm | |
Front for 4V K bikes | EBC FF-407 | |
Disc Brake Quiet | All Ks | Permatex 80077 | When brake pads are replaced or your brakes start squealing | Helps reduce disc brake squeal. |
Silicone Spray | 94-95 K75RT & K1100LT | 3M Silicone Spray | 20,000 Miles 32,000 km | For the chrome rods the windscreen bracket slides on. Silicone attracts less dust than other lubricants. |
Heat Sink Compound | K100RS4V K1 Early K1100 | Radio Shack Silicone Base Heat Sink Compound | 40,000 Miles 65,000 km | Goes behind the ignition amp on the lower front left corner of the battery tray. Clean the old stuff off first. |
