ENGINE
2-Stroke
4-Stroke
TOP END PISTON KITS
  • 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
  • Forged Replica pistons are forged OEM replacements
  • Replica pistons and all rings are OEM replacements
  • Top end piston kit includes piston, rings, pins, circlips, top end gaskets, wrist pin bearing when applicable and cam chain when applicable
    • PISTON VERSIONS
    Cast Replica – Cast OE replacement piston
    Forged Replica – Forged OE stock compression piston
    Forged High Comp – Forged high compression pistons
    FITS MODEL
    COMPRESSION RATIO
    CYLINDER BORE (MM)
    PISTON DIAMETER
    DISPL (MM)
    PISTON VERSION
    TOP END KIT P ART  #
    SUG. RETAIL
    HONDA
    CR80R 90-91
    STD
    47.00
    46.95
    80
    Cast Replica
    0910-3359
    $109.95
    CR80R 92-02
    STD
    47.00
    46.95
    80
    Cast Replica
    0910-3360
    109.95
    CR85R 03-04
    STD
    47.50
    47.45
    85
    Cast Replica
    0910-3028
    99.95
    CR85R 05-07
    STD
    47.50
    47.45
    85
    Cast Replica
    0910-3027
    99.95
    CR85RB 03-04
    STD
    47.50
    47.45
    85
    Cast Replica
    0910-3028
    99.95
    CR85RB 05-07
    STD
    47.50
    47.45
    85
    Cast Replica
    0910-3027
    99.95 SUSPENSION
    CR125R 92-97
    STD
    54.00
    53.94
    125
    Cast Replica
    0910-3357
    129.95
    CR125R 98-99
    STD
    54.00
    53.94
    125
    Cast Replica
    0910-3358
    134.95
    CR125R 00-02
    STD
    54.00
    53.94
    125
    Cast Replica
    0910-3019
    129.95
    CR125R 03
    STD
    54.00
    53.94
    125
    Cast Replica
    0910-3018
    129.95
    CR125R 04
    -
    54.00
    53.93
    125
    Cast Replica
    0910-3020
    129.95
    CR125R 05-07
    STD
    54.00
    53.94
    125
    Cast Replica
    0910-3021
    129.95
    CR250R 97-01
    STD
    66.40
    66.35
    250
    Cast Replica
    0910-3022
    175.95
    CR250R 02-04
    STD
    66.40
    66.35
    250
    Cast Replica
    0910-3023
    159.95
    CR250R 05-07
    STD
    66.40
    66.35
    250
    Cast Replica
    0910-3024
    159.95
    CRF250R 04-07
    12.9:1
    78.00
    77.95
    250
    Forged Replica
    0910-3724
    229.95
    12.9:1
    78.00
    77.96
    250
    Forged Replica
    0910-3725
    229.95
    12.9:1
    78.00
    77.97
    250
    Forged Replica
    0910-3726
    229.95
    13.4:1
    78.00
    77.95
    250
    Forged High Comp
    0910-3736
    259.95
    13.4:1
    78.00
    77.96
    250
    Forged High Comp
    0910-3737
    259.95
    13.4:1
    78.00
    77.97
    250
    Forged High Comp
    0910-3738
    259.95
    CRF250R 08-09
    13:1
    78.00
    77.95
    250
    Forged Replica
    0910-3760
    239.95
    13:1
    78.00
    77.96
    250
    Forged Replica
    0910-3761
    239.95
    13.5:1
    78.00
    77.96
    250
    Forged High Comp
    0910-3764
    264.95
    CRF250R 10-13
    13.2:1
    76.80
    76.76
    250
    Forged Replica
    0910-3769
    244.95
    13.2:1
    76.80
    76.77
    250
    Forged Replica
    0910-3770
    244.95
    14.1:1
    76.80
    76.76
    250
    Forged High Comp
    0910-3775
    264.95
    14.1:1
    76.80
    76.77
    250
    Forged High Comp
    0910-3776
    264.95
    CRF250X 04-16
    13.4:1
    78.00
    77.97
    250
    Forged High Comp
    0910-3724
    229.95
    12.9:1
    78.00
    77.96
    250
    Forged Replica
    0910-3725
    229.95
    12.9:1
    78.00
    77.97
    250
    Forged Replica
    0910-3726
    229.95
    13.4:1
    78.00
    77.95
    250
    Forged High Comp
    0910-3736
    259.95
    13.4:1
    78.00
    77.96
    250
    Forged High Comp
    0910-3737
    259.95
    13.4:1
    78.00
    77.97
    250
    Forged High Comp
    0910-3738
    259.95
    TOP END PISTON KITS continued on next page.
    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.
    2018 PARTS UNLIMITED OFFROAD