ENGINE
HIGH-PERFORMANCE PISTONS
  • Forged from high-silicon aluminum alloy for maximum strength
  • and dependability
  • Wiseco offers a complete range of popular piston models and years
  • FORMULA FOR COMPUTING CUBIC CENTIMETER DISPLACEMENT
    D = Bore Size in Inches; S = Stroke in Inches; Number = Number of Cylinders
    WISECO FEATURES PRO-LITE PISTONS
  • Durability, longevity and increased horsepower
  • PK PISTON AND GASKET KITS
  • Contain all the necessary components for overboring or rebuilding your top end
  • Cylinder sleeves must be purchased separately
  • See price list on page 787-788
  • WRIST PINS
  • Wiseco wrist pins are strong, lightweight and can be used
  • WISECO PISTON PRICING
    with OEM pistons, too
  • All Wiseco High-Performance Motorcycle Pistons are priced with rings and
  • Wiseco 2-stroke pistons include a wrist pin unless indicated
  • See price list on page 788
  • 4-STROKE RACER’S CHOICE PISTONS
    TOP END BEARINGS
  • Now you can own the same race parts as all the top race teams
  • High-quality bearings are manufactured to the highest
  • standards; case-hardened for maximum life and smooth
    strutted forgings, and titanium nitride-coated rings, which all add up to more
    operation at high engine speeds
    power that is sustained longer
  • See price list on page 788
  • When blow-by starts to increase on other pistons and power starts to fade,
  • Wiseco Race Series parts continue sealing and performing
    NOTE: Service intervals may be increased with Racer’s Choice pistons over conventional
    CIRCLIPS
    Wiseco pistons, and are for expert racers and tuners only.
  • Two high-strength, easy-to-install circlips furnished with
  • every piston
    2-STROKE GP SERIES PISTONS
  • Order additional inventory from the chart on page 788
  • See price list on page 788
  • Each piston is E-Coated on the crown, ring grooves, and pin bore, for maximum
  • wear resistance and protection from micro-welding, galling, and detonation
    REPLACEMENT RING SETS
  • GP Series parts generally have less machining on the outside, which helps seal up
  • Each ring set is for one piston
  • See Wiseco ring buyer’s guide for details
  • See price list on page 788
  • increased pull on the top end
    NOTE: Wiseco rings fit only Wiseco pistons.
    BORE (MM)
    BORE OVER
    WISECO
    REPL.
    REPL.
    TOP-END
    X STROKE
    DISPL. SIZE
    SIZES
    PK KIT
    PISTON
    REPL. RING CIRCLIPS
    WRIST PIN
    BEARING
    (MM)
    (CC)
    (MM) (MM)
    PART #
    PART #
    SET PART # PART #
    PART #
    PART #
    ATK/ ROTAX
    250 96-01
    67.5
    250
    67.5
    STD
    -
    0910-2872
    2658CD
    CW18
    S-477
    -
    x
    69.8
    EC 125 00-11, MC125 00-11
    54
    125
    54.0
    STD
    -
    0910-0729
    2126CS
    CW15
    -
    -
    Racer’s Choice GP Style
    x
    134
    56.0
    2.0
    -
    0910-0730
    2205CS
    Electra Coated
    54.5
    EC200 99-11
    62.5
    199
    62.5
    STD
    -
    0910-2879
    2461CD
    CW18
    S-477
    -
    x
    65
    EC 250R 14-17, EC 250 97-14,
    66.4
    249
    66.4
    STD
    -
    0910-1698
    2614CD
    CW18
    S-508
    -
    x
    72
    EC 300R 14-17, EC300 00-14
    72
    293
    72
    STD
    -
    0910-1699
    2835CD
    CW18
    S-508
    -
    x
    72
    CR80R 80-82
    49.5
    79.7
    49.5
    STD
    -
    -
    1949CD
    CW12
    S538
    B1015
    TC80 70-78
    x
    50.0
    0.5
    -
    450M05000
    1969CD
    Piston pin
    41.4
    50.25
    0.75
    -
    -
    -
    not included
    50.5
    1.0
    -
    -
    1988CD
    51.0
    1.5
    -
    450M05100
    2008CD
    51.5
    2.0
    -
    -
    2028CD
    CR80R 83
    49.5
    79.7
    49.5
    STD
    -
    -
    1949CD
    CW12
    S538
    B1015
    x
    50.0
    0.5
    -
    493M05000
    1969CD
    Piston pin
    41.4
    50.5
    1.0
    -
    -
    1988CD
    not included
    51.0
    1.5
    -
    493M05100
    2008CD
    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