APE Stud Kits & Head Nuts

  • Heavy Duty Cylinder Head Nuts
  • Heavy Duty Main Bearing Studs
  • Heavy Duty Cylinder Studs
  • Kawasaki Main Bearing Support Cap


    • Heavy Duty Cylinder Head Nuts Heavy Duty Cylinder Head Nuts

    Super heat treated cylinder head nuts are a must for high output engines. Help prevent blown and leaking head gaskets caused by the threads in the soft stock nuts stretching. APE nuts are machined from alloy steel and fully heat treated for maximum strength. Nuts are .150" taller than stock to prevent the nut from bottoming out on the stud when the head has been milled.
    Note: Packed in complete engine sets.

    Order No.DescriptionApplicaiton
    875-050
    (APE#: CHN1000K)    		10mm x 1.25 with 7/8 base dia. Kawasaki 900/1000/1100
    Suzuki GS1100/1150
    GSXR750/1100 oil-cooled
    875-051
    (APE#: CHN1100GSXW)    		10mm x 1.25 with 3/4" base dia.For use with any application requiring the smaller 3/4" base dia. Including 875-126.
    875-052
    (APE#: CHN1100K)    		Special head nuts for use with 875-103 stud set
    875-053
    (APE#: CHN1000TF)    		Special head nuts for use with 875-105 stud set
    875-055
    (APE#: CHN10125-10)    		Complete cylinder head nuts for 875-128 (10 pcs)
    875-054
    (APE#: CHN10125-8)    		Complete cylinder head nuts for 875-128 (8 pcs)



    Heavy Duty Main Bearing Studs

    Heat treated chrome moly main bearing studs (case studs) are necessary to prevent the cases from moving around under power in high output engines. These high strength studs help to prevent crankshaft damage. Made from the same special chrome moly that are used in APE cylinder studs. All threads are rolled after heat treat for maximum strength.

    ApplicationAPE No.Order No.
    HONDA
    900/1100FMBS900H875-194
    KAWASAKI
    KZ900/1000/1100MBS1000K875-190
    SUZUKI
    GS1100MBS 1100S875-191
    GSXR1100 thru '92MBS1100GSX875-192
    GSX1300R HayabusaMBS1300GSX875-193



    Heavy Duty Cylinder Studs

    Heavy duty cylinder studs are necessary to prevent head gasket leakage in high compression and turbocharged engines. Stock studs are made from poor material that will stretch and allow gasket leakage. APE studs are made from heat treated chrome moly and have rolled threads for maximum strength.

    ApplicationAPE No.Order No.
    HONDA
    750 SOHC thru 78CS750H875-140
    900/1100FCS900H875-141
    KAWASAKI
    650/750 2 valve foursCS650K875-100
    ZX7 98-99CS750K875-101
    900/1000/1100CS900K875-102
    ZX11/10/1000 Ninja*** CS1100K875-103
    ZX12 CS1200K 875-104
    1000 top fuel 7/16"***CS1000KH875-105
    SUZUKI
    GS1000 2 valveCS1000S875-120
    GS1100CS1100S875-121
    GS1150CS1150S875-122
    GSXR1100, 1052cc case
    (30mm starter hole)     		CS1052GSX875-124
    GSXR1100, 1127cc case
    (40mm starter hole)     		CS1127GSX875-125
    GSXR1100W ***93-99CS1100GSXW875-126
    GSX1300R Hayabusa***CS1300GSX875-127
    SV650 allCS650S875-128
    YAMAHA
    FZR600CS600Y875-160
    YZF750CS750YZF875-161
    FZR1000 lateCS1000Y875-162
    R1CS1000R1875-163
    FJ1100 (late) / FJ1200CS1100FJ875-164
    ***Must Use Special Head Nuts



    Kawasaki Main Bearing Support Cap Kawasaki Main Bearing Support Cap

    Helps prevent crankshaft flex and resulting broken cranks. This is necessary on all Kawasakis that make serious horsepower. All 900/1000 thru '78.

    Order No. 875-198 (APE No. 99285)

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