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King Racing


Brand New KING RACE  Main Bearing SET for BMW Engine Types

S85B50

Suitable For

M5 & M6

STANDARD SIZE FOR USE WITH UNGROUND CRANKS


TECHNICAL FEATURES OF KING RACE BEARINGS

Bulls Eye
  • No more multiple set purchases or "fishing" for bearings to reach right clearance
  • No need to grind cranks "fat" or "thin"
  • No need to adjust housing diameter
  • Less taper across the bearing face
PmaxBlack
  • 24% greater load capacity
  • 17% more fatigue resistance
  • Compatible with all crankshafts
  • pMax-Black combines a unique tri-metal structure with advanced surface processes to deliver superior load capacity.
Elliptix
  • Increases oil passage capacity
  • Produces higher oil supply reliability
  • No need for custom-made oil hole enlargement
U Groove
  • Better load distribution across the bearing surface
  • A more stable hydrodynamic lubrication regime
  • Greater bearing durability at high RPM's
Radia Lock
  • Optimal press fit
  • Improves bearing spin and fretting prevention
  • Better heat transfer
  • Reduces bearing and housing distortion
eccentrix
  • Better oil wedge formation
  • Stable hydrodynamic lubrication regime
  • Minimised vibration and wear
  • Prevention of oil film "wiping" in high RPM conditions
  • Optimal load distribution across bearing surface


Additional Bearing Information

Set part no qty Position crankshaft housing Length Max Wall

MB637XP

 

 M5803UPR

 M5803LPR

MK5803UPR

MK5803LPR


5 Pairs

 

 1 Pair

     

    

     00.000

     00.000

     00.000

     00.000

     00.000

     65.034

     00.000

     65.034

 21.699 
 

27.541
     2.497


    2.497 


Please contact us if you are unsure if this is the correct part or for international postage

We are main distributors for MAHLE Motorsports, King Bearings, NPR Piston Rings, DAIDO Race Bearings, IAPEL Forged pistons, Bridgeway Steel Rods & Cranks and many other leading engine parts manufacturers. This part is brand new.

PICTURES ARE OF THE ACTUAL PART! 

 

About Us

MAR Motorsport Ltd are a specialist distributor of both standard and high performance engine components based in the West Midlands. With years of experience supplying parts to the trade, many of the UK's leading race engine builders rely on MAR Motorsport to supply the parts for their engines.We supply parts from exotic Group B engine parts to classics, many of which are our own design. Leading UK race series are currently running using MAR Motorsport supplied parts, from single seater to road based formulas.

We ship parts same day via DPD if ordered and paid before 3pm

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