No hassle
returns
Live in-stock
inventory
Save over
60% retail
You have no items in your shopping cart.
September Sale: $274.12
In Stock
May ship from manufacturer
Free Shipping
Part number: MB5578XP05
Product Details
King Engine Bearings MB5578XP05 King Racing Main Bearings - XP Tri-Metal
Main Bearing XP Series
Tri-Metal Performance

Successful race engine builders are constantly pushing the limits of load capacity to new levels. Race bearings today inevitably need to match these demands with more competitive bearings. At King Racing we met the challenge with the XP high performance bearings series.

The XP series is a line of bearings with advanced metallurgical and geometric technologies that meet extreme performance loads. It was developed for all performance applications that use forged steel aftermarket crankshafts and produce high loads for extended periods.

King Racing?s XP series features pMax Black?, a unique tri-metal structure that is 24% harder than any other conventional tri-metal race bearing. pMax Black? together with the XP geometric features are the ideal combination for performance racing. For more on King Racing technologies visit TechLab

All King Bearings are specifically engineered to withstand the highest loads and RPMs generated by today?s top competition engines. All King Performance Engine Bearings feature:

  • ?Bull?s Eye Tolerance?. King engine bearings have the closest wall tolerances in the industry, with all shells matched to 0.0001?.
  • Increased Height. Greater rod bearing height improves bearing-to-bore contact/heat transfer and reduces spin potential at high RPM.
  • Improved Oiling. Mains feature enlarged, chamfered oil holes.
  • Medium Eccentricity. This enables optimum load distribution and improved oiling.
  • Dowel Holes. Most rod bearings are available with or without dowel holes.
  • Narrowed Design. Mains and rods are narrowed for large-radius crankshafts.

We offer the industry?s widest selection of sizes, including special clearance options. With more choices than ever, you?ll find the right King High Performance Engine Bearings for your most demanding applications.

King XP Bearings Features

Applications

  • High-load, long-duration racing such as circle track, off-road, off-shore, and others that require steel crankshafts

Construction
Enhanced tri-metal copper lead construction with nickel barrier and SecureBond adhesion

Features

  • 15% ? 30% greater load capacity than traditional bearings
  • The SecureBond unique adhesion process, for superior stability between the top and intermediate layers
  • 0.0005? metallurgically enhanced and hardened performance overlay withstands greater loads and better resists surface fatigue
  • Mains are 1/2 grooved for uncompromised lower shell load capacity
Reviews
Add your review
M
Its online. Its easy. Duh
J
very easy to use
L
Great so far
T
I will continue to buy from you if all is good
Show All Reviews
Fitment
Buick Apollo
1996 Buick Apollo ALL
1995 Buick Apollo ALL
1994 Buick Apollo ALL
1993 Buick Apollo ALL
1992 Buick Apollo ALL
1991 Buick Apollo ALL
1990 Buick Apollo ALL
1989 Buick Apollo ALL
1988 Buick Apollo ALL
1987 Buick Apollo ALL
1986 Buick Apollo ALL
1985 Buick Apollo ALL
1984 Buick Apollo ALL
1983 Buick Apollo ALL
1982 Buick Apollo ALL
1981 Buick Apollo ALL
1980 Buick Apollo ALL
1979 Buick Apollo ALL
1978 Buick Apollo ALL
1977 Buick Apollo ALL
1976 Buick Apollo ALL
1975 Buick Apollo ALL
1974 Buick Apollo ALL
1973 Buick Apollo ALL
1972 Buick Apollo ALL
1971 Buick Apollo ALL
1970 Buick Apollo ALL
1969 Buick Apollo ALL
1968 Buick Apollo ALL
Buick Century
1996 Buick Century ALL
1995 Buick Century ALL
1994 Buick Century ALL
1993 Buick Century ALL
1992 Buick Century ALL
1991 Buick Century ALL
1990 Buick Century ALL
1989 Buick Century ALL
1988 Buick Century ALL
1987 Buick Century ALL
1986 Buick Century ALL
1985 Buick Century ALL
1984 Buick Century ALL
1983 Buick Century ALL
1982 Buick Century ALL
1981 Buick Century ALL
1980 Buick Century ALL
1979 Buick Century ALL
1978 Buick Century ALL
1977 Buick Century ALL
1976 Buick Century ALL
1975 Buick Century ALL
1974 Buick Century ALL
1973 Buick Century ALL
1972 Buick Century ALL
1971 Buick Century ALL
1970 Buick Century ALL
1969 Buick Century ALL
1968 Buick Century ALL
Buick Commercial Chassis
1996 Buick Commercial Chassis ALL
1995 Buick Commercial Chassis ALL
1994 Buick Commercial Chassis ALL
1993 Buick Commercial Chassis ALL
1992 Buick Commercial Chassis ALL
1991 Buick Commercial Chassis ALL
1990 Buick Commercial Chassis ALL
1989 Buick Commercial Chassis ALL
1988 Buick Commercial Chassis ALL
1987 Buick Commercial Chassis ALL
1986 Buick Commercial Chassis ALL
1985 Buick Commercial Chassis ALL
1984 Buick Commercial Chassis ALL
1983 Buick Commercial Chassis ALL
1982 Buick Commercial Chassis ALL
1981 Buick Commercial Chassis ALL
1980 Buick Commercial Chassis ALL
1979 Buick Commercial Chassis ALL
1978 Buick Commercial Chassis ALL
1977 Buick Commercial Chassis ALL
1976 Buick Commercial Chassis ALL
1975 Buick Commercial Chassis ALL
1974 Buick Commercial Chassis ALL
1973 Buick Commercial Chassis ALL
1972 Buick Commercial Chassis ALL
1971 Buick Commercial Chassis ALL
1970 Buick Commercial Chassis ALL
1969 Buick Commercial Chassis ALL
1968 Buick Commercial Chassis ALL
Buick Electra
1996 Buick Electra ALL
1995 Buick Electra ALL
1994 Buick Electra ALL
1993 Buick Electra ALL
1992 Buick Electra ALL
1991 Buick Electra ALL
1990 Buick Electra ALL
1989 Buick Electra ALL
1988 Buick Electra ALL
1987 Buick Electra ALL
1986 Buick Electra ALL
1985 Buick Electra ALL
1984 Buick Electra ALL
1983 Buick Electra ALL
1982 Buick Electra ALL
1981 Buick Electra ALL
1980 Buick Electra ALL
1979 Buick Electra ALL
1978 Buick Electra ALL
1977 Buick Electra ALL
1976 Buick Electra ALL
1975 Buick Electra ALL
1974 Buick Electra ALL
1973 Buick Electra ALL
1972 Buick Electra ALL
1971 Buick Electra ALL
1970 Buick Electra ALL
1969 Buick Electra ALL
1968 Buick Electra ALL
Buick Estate Wagon
1996 Buick Estate Wagon ALL
1995 Buick Estate Wagon ALL
1994 Buick Estate Wagon ALL
1993 Buick Estate Wagon ALL
1992 Buick Estate Wagon ALL
1991 Buick Estate Wagon ALL
1990 Buick Estate Wagon ALL
1989 Buick Estate Wagon ALL
1988 Buick Estate Wagon ALL
1987 Buick Estate Wagon ALL
1986 Buick Estate Wagon ALL
1985 Buick Estate Wagon ALL
1984 Buick Estate Wagon ALL
1983 Buick Estate Wagon ALL
1982 Buick Estate Wagon ALL
1981 Buick Estate Wagon ALL
1980 Buick Estate Wagon ALL
1979 Buick Estate Wagon ALL
1978 Buick Estate Wagon ALL
1977 Buick Estate Wagon ALL
1976 Buick Estate Wagon ALL
1975 Buick Estate Wagon ALL
1974 Buick Estate Wagon ALL
1973 Buick Estate Wagon ALL
1972 Buick Estate Wagon ALL
1971 Buick Estate Wagon ALL
1970 Buick Estate Wagon ALL
1969 Buick Estate Wagon ALL
1968 Buick Estate Wagon ALL
Buick Gran Sport
1996 Buick Gran Sport ALL
1995 Buick Gran Sport ALL
1994 Buick Gran Sport ALL
1993 Buick Gran Sport ALL
1992 Buick Gran Sport ALL
1991 Buick Gran Sport ALL
1990 Buick Gran Sport ALL
1989 Buick Gran Sport ALL
1988 Buick Gran Sport ALL
1987 Buick Gran Sport ALL
1986 Buick Gran Sport ALL
1985 Buick Gran Sport ALL
1984 Buick Gran Sport ALL
1983 Buick Gran Sport ALL
1982 Buick Gran Sport ALL
1981 Buick Gran Sport ALL
1980 Buick Gran Sport ALL
1979 Buick Gran Sport ALL
1978 Buick Gran Sport ALL
1977 Buick Gran Sport ALL
1976 Buick Gran Sport ALL
1975 Buick Gran Sport ALL
1974 Buick Gran Sport ALL
1973 Buick Gran Sport ALL
1972 Buick Gran Sport ALL
1971 Buick Gran Sport ALL
1970 Buick Gran Sport ALL
1969 Buick Gran Sport ALL
1968 Buick Gran Sport ALL
Buick GS350
1996 Buick GS350 ALL
1995 Buick GS350 ALL
1994 Buick GS350 ALL
1993 Buick GS350 ALL
1992 Buick GS350 ALL
1991 Buick GS350 ALL
1990 Buick GS350 ALL
1989 Buick GS350 ALL
1988 Buick GS350 ALL
1987 Buick GS350 ALL
1986 Buick GS350 ALL
1985 Buick GS350 ALL
1984 Buick GS350 ALL
1983 Buick GS350 ALL
1982 Buick GS350 ALL
1981 Buick GS350 ALL
1980 Buick GS350 ALL
1979 Buick GS350 ALL
1978 Buick GS350 ALL
1977 Buick GS350 ALL
1976 Buick GS350 ALL
1975 Buick GS350 ALL
1974 Buick GS350 ALL
1973 Buick GS350 ALL
1972 Buick GS350 ALL
1971 Buick GS350 ALL
1970 Buick GS350 ALL
1969 Buick GS350 ALL
1968 Buick GS350 ALL
Show All Vehicle Fitments
Return Policy
Returns are easy at THMotorsports
Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy