ApplicationCompatible for BMW S1000RR / K46SpecificationTüV Certification Con RodsPiston Bolt Hole: +-4/1000mmQuantity: 4 Pieces a setBolts: Including Genuine 3/8\" ARP 2000 bolts (Note: Extra cost for upgrading to ARP L19 bolts)Material: Forged 4340 aircraft chrome moly quality steel for racingWeight Tolerance: Balanced to +/- 1 gram in setHorse Power: Supports 600-800HPTorque Specs: 48ft with regular molyPin Type: No bushing, it\'s press fitDimensions:Center to center length: 103mmBig end diameter: 37mmSmall end diameter: 17mmPress fit, no bushing with light weight 279g(without bolts)Note* Professional installation is highly recommended (No Instruction Included)* For any needs please contact us