Complete new maintenance kit for all K100 4 valve & K1100 bikes. Includes OEM Mahle air filter & Mann fuel filter,Bosch oil filter with crush washer, oil filter door O-ring, oil filler plug O-ring, 2 fuel line hose clamps, transmission and final drive crush washer set, and 4 NGK DCPR7E spark plugs - (Bosch has discontinued the XR7LDC spark plugs). Also includes a 4 liter jug of high quality German Liqui-Moly Racing 4T 20W-50 engine oil and 1.25 liters of Liqui-Moly 75W90 Synthetic Racing gear oil. This is the regular mineral based engine oil with API-SG/SJ/SL rating and the fully synthetic 75W90 gear oil (GL-5 rating). This is enough for 1 engine oil change on you K-bike with a little left over for topping up and 1 trans and final drive oil change. New these parts total nearly $220, save big here! Please note: Liqui-Moly has changed their packaging on their gear oil from 500ML bottle to 1000ML bottles. This kit now contains 1.25 liters of gear oil.