ENGINE
2-stroke kit
4-stroke kit
CYLINDER REBUILD KITS
  • One boxed component kit provides the foremost compatible top-end rebuild solution
  • 2-stroke kits are packaged complete with wear-resistant Moly2000 centrifugally spun-cast cylinder sleeve, matching pro-forged or pro-cast piston
  • kit, wrist pin bearing and complete top-end gasket set
  • 4-stroke kits include everything in the 2-stroke kit plus valve stem seals
  • P ART  #
    SUG. RETAIL
    FITS MODEL
    P ART  #
    SUG. RETAIL
    HONDA
    KTM
    CR85R 03-04
    0931-0412
    $250.95
    200 SX, M/XC, EXC, XC-W 03-14
    0931-0520
    $335.95
    CR85R 05-07
    0931-0382
    250.95
    SUZUKI
    0931-0413
    335.95
    RM85 02-17
    0931-0417
    250.95
    CR250R 02-03
    0931-0383
    335.95
    RM125 00
    0931-0387
    267.95
    XR400R 96-04
    0931-0414
    310.95
    RM125 01-03
    0931-0418
    267.95
    KAWASAKI
    RMZ250 04-16
    0931-0386
    326.95
    KX80 98-00
    0931-0384
    250.95
    DRZ400 00-17
    0931-0360
    331.95
    0931-0415
    250.95
    YAMAHA
    KX125 04-05
    0931-0385
    267.95
    YZ85 02-17
    0931-0388
    250.95
    KX250 02-03
    0931-0416
    314.95
    YZ125 99-00
    0931-0419
    267.95
    KX250F 04-05
    0931-0386
    326.95
    YZ125 05-17
    0931-0389
    267.95
    KX250F 06-08
    0931-0518
    326.95
    YZ250 99-01
    0931-0420
    335.95
    0931-0519
    326.95
    YZ250 02-17
    0931-0390
    335.95
    KX450F 06-08/ KLX450R 08-12
    0931-0517
    369.95
    0903-1304
    0912-0664
    PISTON SYSTEM W/ STAINLESS STEEL VALVES
    FOR YAMAHA YZ250F 14-16
  • The only safe way to maximize compression; the valve reliefs in the piston are purposely convex and match the geometry of the
  • dishes in the valves
  • Conversion to Black Diamond™ stainless steel valves offers up to twice the life of the stock titanium valves
  • retainer springs (.395” lift intake, .0370” lift exhaust)
  • Made in the U.S.A.
  • used as a kit.
    DESCRIPTION
    P ART  #
    SUG. RETAIL
    Piston/ stainless steel valve comversion kit
    0903-1304
    $581.95
    Replacement piston ring set only
    0912-0664
    $27.95
    DISCLAIMER: NOT LEGAL FOR SALE OR USE IN CALIFORNIA ON ANY POLLUTION CONTROLLED MOTOR VEHICLES.
    SEE PAGE 4 FOR IMPORTANT EMISSION DEFINITIONS AND REGULATORY COMPLIANCE AND WARRANTY INFORMATION.
    2017 PARTS UNLIMITED OFFROAD