Pro Circuit High Compression Piston Kit

• Product Details

  The MotoSport.com Pro Circuit High Compression Piston Kit includes one of each of the following components with these attributes:

  Pro Circuit High Compression Piston:

  Important Note:

  This piston is for a stock sized bore. Please measure your cylinder to check clearance before ordering.

  • Pro Circuit developed their High Compression Piston with the intentions of satisfying the need of your motorcycle's thirst for more power.
  • The Pro Circuit High Compression Piston is an exclusive motorcycle engine upgrade that has the ability to boost low-end torque without neglecting top-end power.
  • Pro Circuit designed the High Compression Piston to increase overall power whether you are running with a stock or modified head making this an easy way to step up your bike to a whole new level.
  • The power gain from the Pro Circuit High Compression Piston does not have to come with the price of expensive race fuel. Pro Circuit designed the High Compression Piston to work with premium pump gas.
  • The Pro Circuit High Compression Piston includes a high compression piston, rings, wrist pin, and circlips.

  Cometic Top End Gasket Kit:

  State-of-the-art gaskets is what Cometic has been doing since its inception in 1989. This comes from their dedication to constructing gaskets for the most demanding race circuits like AMA and NASCAR. Today's lightweight engines are producing more horsepower, higher cylinder pressure, clamp load and extreme temperatures. Cometic's commitment is to provide innovative, quality gaskets while maximizing your engine's power and performance.

  This kit contains the following components:

  • 1 - Head gasket.
  • 1 - Base gasket.
  • 1 - Exhaust gasket.
  • 1 - Cam chain tensioner gasket.
  • 4 - Valve stem seals.
  • 1 - Water pipe O-ring.
  • 1 - Cylinder water outlet O-ring.

  Cometic meets the needs of each specific gasket by using materials to match. Even the basic top end gasket kit features different materials for each gasket. The head gasket is constructed from non-asbestos, flexible graphite that is laminated to a stainless steel core. The manifold and base gaskets are constructed from non-asbestos nitride rubber-bound fiber. Cometic also includes copper gaskets where needed.

  Cometic designs and builds their gaskets in the U.S.A.

  Note:

  Image is for reference only, actual item will vary based on contents and fitment.

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• Q&A

• Fitment

• # Part Numbers

  Gasket Kit

  Product Variant	Manufacturer Part #
  101mm	W6443
  2.0mm Overbore	W6284-CL77
  68mm	W6590
  77mm	W6615, W6885
  78mm	W6239, W6661, W6805
  78mm Bore	C3803, C3619
  79mm	W6993
  79mm Bore	C3635, C3787
  80mm	W6882, W6807-CL77
  81mm	W6240
  83mm	W6676-CL77
  95mm	W6420, W6129, W6980
  96mm	W5974, W6658, W6978, W6650, W6248
  96mm Bore	C3047, C3696, C3733
  97mm	W6640, W6669-CL77, W6691, W6445, W6991
  97mm Bore	C3630, C3786
  98mm	W6414, W6435-CL77
  99mm	W6446-CL77, W6670-CL77, W5975
  99mm Overbore	810277
  EST 100mm Bore	C3276-EST
  EST 66mm Bore	C3187-EST
  EST 77mm Bore	C3174-EST
  EST 78mm Bore	C3133-EST
  EST 79mm Bore	C7185-EST, C3595-EST, C3057-EST, C3274-EST
  EST 80mm Bore	C3550-EST
  EST 81mm Bore	C3059-EST
  EST 95mm Bore	C3604-EST, C7947-EST
  EST 96mm Bore	C3134-EST
  EST 98mm Bore	C3275-EST, C3285-EST, C3178-EST
  EST 99mm Bore	C3234-EST
  Pro Circuit High Compression Piston Kit	35.1348, 35.3409, 810463, P400250600024, 35.4350, 8100051, 810568, 810374, 810268, C3267-EST, 35.6316, 35.4434, 35.1407, 35.1421, 810278, 35.3337, P400210600245, P400250600047, C7908-EST, 810689, 35.3341, 35.4317, R2706-095, 810372, 35.1334, 810595, 35.2448, 35.2424, 810267, 35.4419, P400210600064, 8100012, 35.2414, 35.4431, 35.3349, R2706-081, 810481, 35.1417, C3288-EST, 810284, 35.4406, 810469, 810482, C3187, 8100042, 35.1429, C3268-EST, C3549-EST, 8100031, C3047-EST, 35.2450, P400210600202, C3395-EST, R2706-078, 35.4334, C3270-EST, 810285, 810567, 810687, R2106-095, C3054-EST, 8100000, 8100053, 35.1227, P400250600048, P400250600016, 35.1402, 35.244, P400250600055, 810671, 35.1403, P400485600213, P400270600078, 810997, 8100023, C3057, 810989, 810690, 35.2401, 35.1419, 35.4351, 810213, 35.6414, C3406-EST, 35.2426, 810671, 810262, 810276, 810994, 810984, 35.4339, 35.1338, C3136-EST, 35.4429
  STD	W6255
  Stock	W7047, W7053, W6589, W7052, W5921, W6345, W7054, W7055, W6434, W7049, W6970, W6961
  Without Valve Cover Gasket	P400250600071, P400210600319, P400510600098, P400210600239, P400250600069, P400485600039, P400485600069

  Piston

  Product Variant

  Manufacturer Part #

  Pro Circuit High Compression Piston Kit

  RPK18250F, RPS18450F, RPH19450F, RPS08250, RPKTM24450F, RPY20450F, RPK14450F, RPH21450F, RPY08450F, RPK23250F-1, RPY08250F, RPK16250F-1, RPS08450, RPH18450F, RPH22250F, RPK20250F-2, RPK10450F, RPH14250F1, RPK25450F, RPK21250F-1, RPS19250F, RPKTM24250F, RPH08450F, RPK09250F, RPY18250F-1, RPY23450F, RPH04250F, RPK09450F, RPKTM22250F, RPH08150R, RPH18250F, RPS14450F, RPH16250F-1, RPS16250F-1, RPKTM20450F, RPY18450F, RPY10450F, RPH09450F, RPK19450F-1, RPH20250F, RPH08250F

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