ENGINE
0910-1730
0910-0978
0910-3838
PISTON KITS, RINGS,
WRIST PINS AND CIRCLIPS
  • All pistons are heat treated with a T-5
  • hardening and tempering cycle
  • All piston skirts are coated with a high-
  • tech Molybdenum Disulphite coating for faster break-in time and increased piston life
  • Cast piston kits are gravity cast aluminum alloy (not forged) with 18% silicone content, which produces
  • an extremely light but very strong piston
  • Forged pistons are forged from 2618 aluminum for superior strength and durability
  • Forged High Compression pistons improve power and torque across entire rpm range
  • Big Bore pistons increase engine’s displacement, torque, and peak horsepower
  • Forged Replica pistons are forged OE replacements
  • Replica pistons and all rings are OEM replacements
  • Kits include piston, rings, wrist pin
  • and circlips
  • Replacement two-stroke piston rings
  • PISTON VERSIONS
    sold individually; four-stroke piston
    Cast Replica – Cast OE replacement piston
    rings sold as a set as needed
    Cast Big Bore – Big bore stock compression cast piston
    NOTE: Top End Kits include Piston Kit
    Forged Replica – Forged OE stock compression piston
    and a Top End Gasket Kit, top-end
    Forged Big Bore – Forged OE stock compression big bore piston
    bearing and cam chain.
    Forged High Comp – Forged high compression pistons
    DIAMETER
    PISTON
    PISTON KIT
    TOP END KIT
    RING
    WRIST PIN
    CIRCLIPS
    FITS MODEL
    (MM)
    VERSION
    PART #
    PART #
    PART #
    PART #
    PART #
    ARCTIC CAT
    DVX 400 04-07
    89.96
    Forged Replica
    0910-0978
    0910-3838
    0912-0236
    0913-0023
    0913-0046
    89.97
    Forged Replica
    0910-1838
    0910-3839
    0912-0236
    0913-0023
    0913-0046
    89.98
    Forged Replica
    0910-1839
    0910-3840
    0912-0236
    0913-0023
    0913-0046 DRIVETRAIN
    DVX 400 04-07 (407cc Big Bore)
    90.96
    Forged Big Bore
    0910-1864
    -
    0912-0223
    0913-0023
    0913-0057
    DVX 400 04-07 (Big Bore)
    93.95
    Forged Big Bore
    0910-1972 1
    -
    0912-0237
    0913-0023
    0913-0057
    93.96
    Forged Big Bore
    0910-1973 1
    -
    0912-0237
    0913-0023
    0913-0057
    93.97
    Forged Big Bore
    0910-1974 1
    -
    0912-0237
    0913-0023
    0913-0057 SUSPENSION
    93.98
    Forged Big Bore
    0910-2635 1
    -
    0912-0237
    0913-0023
    0913-0057
    DVX 400 04-07 (compression 13.5:1)
    89.96
    Forged High Comp
    0910-1822
    -
    0912-0236
    0913-0023
    0913-0057
    89.97
    Forged High Comp
    0910-1823
    -
    0912-0236
    0913-0023
    0913-0057
    89.98
    Forged High Comp
    0910-1824
    -
    0912-0236
    0913-0023
    0913-0057 ENGINE
    HONDA
    TRX400EX 99-08
    84.95 (STD)
    Cast Replica
    0910-1065
    -
    -
    0913-0028
    0913-0057
    TRX400EX/X 99-14
    84.97
    Cast Replica
    0910-1065
    -
    0912-0583
    0913-0028
    0913-0057
    85.47
    Cast Replica
    0910-1066
    -
    -
    0913-0028
    0913-0057
    85.97
    Cast Replica
    0910-1067
    -
    0912-0584
    0913-0028
    0913-0057
    86.95
    Cast Big Bore
    0910-1068
    -
    0912-0233
    0913-0028
    0913-0057
    87.95
    Cast Big Bore
    0910-1069
    -
    0912-0234
    0913-0028
    0913-0057
    88.95
    Cast Big Bore
    0910-1070
    -
    0912-0235
    0913-0028
    0913-0057 ELECTRICAL
    TRX400EX 99-08
    88.94
    Cast Stroker
    0910-2636 4
    -
    0912-0390
    0913-0032
    0913-0046
    TRX450R 04-05 (compression 10.5:1)
    93.97
    Cast Replica
    0910-1071
    -
    0912-0237
    -
    0913-0052
    93.98
    Cast Replica
    0910-1728
    -
    0912-0237
    -
    0913-0052
    93.99
    Cast Replica
    0910-1729
    -
    0912-0237
    -
    0913-0052 LIGHTING
    TRX450R 04-05 (compression 11.5:1)
    93.95
    Forged High Comp
    0910-1730
    -
    0912-0237
    -
    0913-0052
    93.96
    Forged High Comp
    0910-1731
    -
    0912-0237
    -
    0913-0052
    93.97
    Forged High Comp
    0910-1732
    -
    0912-0237
    -
    0913-0052 HARDWARE &
    TRX450R 04-05 (compression 13.1:1)
    93.95
    Forged High Comp
    0910-1733
    -
    0912-0237
    -
    0913-0052 MERCHANDISING
    93.96
    Forged High Comp
    0910-1734
    -
    0912-0237
    -
    0913-0052
    93.97
    Forged High Comp
    0910-1735
    -
    0912-0237
    -
    0913-0052
    TRX450R 04-05 (479cc Big Bore; compression 10.5:1)
    96.96
    Cast Big Bore
    0910-1966 1
    -
    0912-0324
    0913-0097
    0913-0052 CROSS
    96.97
    Cast Big Bore
    0910-1967 1
    -
    0912-0324
    0913-0097
    0913-0052 REFERENCE
    96.98
    Cast Big Bore
    0910-1968 1
    -
    0912-0324
    0913-0097
    0913-0052
    96.99
    Cast Big Bore
    0910-2634 1
    -
    0912-0324
    0913-0097
    0913-0052
    1 Replacement Cylinder Works Big Bore pistons.
    4 For use with Hot Rods stroker crankshaft #4240 (Parts Unlimited 0921-0086).
    PISTON KITS, RINGS, WRIST PINS AND CIRCLIPS continued on next page.
    2018 PARTS UNLIMITED ATV/UTV