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Triumph T120/TR6 650cc Billet Pistons

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Triumph T120/TR6 650cc Billet Pistons

Availability: In stock

M.A.P. Cycle Billet Piston Kits for OEM cylinders.  Not for aftermarket big bore cylinders.

$275.00 - $300.00

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M.A.P. Cycle Billet Piston Kits for M.A.P. Cycle Billet Piston Kits for OEM (71mm bore) cylinders. Not for aftermarket big bore cylinders.

    • Hi-Silicone, low expansion, Hi-Strength 4032 aluminum alloy.  The ultimate for severe use in air cooled engines.
    • 100% CNC Machined, utilizing the latest “Solid Works” CAD design. This allows for consistent cross-section providing the most even heat distribution with the highest weight reduction (lightest commercially available piston kits for less vibration).
    • Lo-Dome "Tight Quench" design for efficient flame travel and combustion (9.5:1 compression ratio and higher)
    • Zero Deck design for max power while minimizing octane requirements (9.5:1 compression ratio and higher)
    • 2nd Ring-Land "Accumulator" groove to prevent unloading of the top ring from trapped blow-by.
    • Tapered wrist pin (I.D.) for rigidity and weight reduction
    • “Micro Groove" piston skirt for high scuff resistance.
    • Race Type "SpiroLoc" clips for reliability - Won't come out
    • Latest piston cam design reduces noise, and increases life better than any other commercially available vintage Brit Bike piston kit.

    Updated wrist pin oiling:

      • 4 location pressure fed wrist pin oilers
      • Increases oil volume to pin
      • Dual clocked pin bore grooving holds and disperses the oil around the wrist pin
      • Minimizes heat buildup to prevent galling between the small end of the rod and the wrist pin

    Race proven ring pack features:

      • Perfectly round making these the best sealing, quickest seating rings available.
      • Modern sizing for the least amount of friction with the most amount of heat transfer for cooler running pistons.
        • 1.0mm Nitrided Stainless Steel Barrel-Face Top Ring
        • 1.2mm Ferrox Cast-Iron Napier 2nd
        • 2.8mm Nitrided Stainless Steel Rails with expander (3 piece design)

    Note:  Stated compression ratios are an approximation, and are dependent on several variables such as base and head gasket thickness, and any modifications that changes combustion chamber volume such as valve recession, valve sizing, and head surface milling.

    Designed by, and exclusively manufactured for M.A.P. Cycle thru sources in the U.S.A.

Additional Information

Piston Material Billet - 4032
Additional Information

Additional Information

Piston Material Billet - 4032

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Are these piston sets OK to use in my 1959 Triumph T110, 650cc.
What are the oversize increments and also what is the freight cost to New Zealand.
Thanks for your assistance.
To whom it may concern,
I have a Triumph TR6 1978 Model. 9.1 comp ratio
I need .020"os Pistons,your site doesn,t allow to order os" can you or do you supply os" also i need Gudgeon pin bushes,gaskets, Inlet & Exh valves can you supply these as well. Also you say to order one, is it one piston or 1pair?
Many Thanks
For the original cast pistons I've been accustomed to leaving about .045-.060" of clearance to the cylinder wall. What kind of clearance would you recommend for your billet piston sets?
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