General : 727.381.1151   Toll Free : 1.800.875.BRIT(2748)

Triumph T120 Big Bore Billet Piston Set

More Views

Triumph T120 Big Bore Billet Piston Set

Availability: In stock

M.A.P. Cycle Billet Piston Kits for Routt, Morgo, Aerco, Chatland and MAP BIG BORE cylinders.  Not for OEM cylinder use.

$275.00 - $300.00

* Required Fields

Questions ?

Answer !

Have a Question about Triumph T120 Big Bore Billet Piston Set ?

Our customer service has the answer.

Ask Us
Description

Details

M.A.P. Cycle Billet Piston Kits for Routt, Morgo, Aerco, Chatland and MAP BIG BORE cylinders.  Not for OEM cylinder use.

    • 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

SKU MAP9009-9011-BILLET
Piston Material Billet - 4032
Manufacture MAP Cycle
Country of Manufacture United States
Additional Information

Additional Information

SKU MAP9009-9011-BILLET
Piston Material Billet - 4032
Manufacture MAP Cycle
Country of Manufacture United States
Reviews

Be the first to review this product

Write Your Own Review

You're reviewing: Triumph T120 Big Bore Billet Piston Set

Product Question

Product Questions

Question will be displayed after moderation.

Hello, i am looking for the highest compression pistons i can get for my T120TT i have running on menthol. need to measure 77.3 mm and i am running 650 rods so i need 650 wrist pin size. Thanks,
Robert Merker
E866 210th Av
Elmwood Wisconsin, 54740
715-505-2167
1
Approximately how many grams are 77.75mm 9.5:1 a piston (complete assembly)? Thanks - is there a table with the weights on anywhere on your site?
0
Hi,
I have a 750 Routt kit on my '68 T120. Because of age and health I can no longer start the bike. When I quit racing MANY years ago, I had extra parts and up-graded my Bonneville. I no longer remember much about the parts I used, so I'm not sure which compression ratio to order... I don't want a "wimpy" motor... What would the compression ratio be on a stock 650?
-1
Hello from Australia.
I have Routt Triumph cylinders bored to 3.059 inches or 77.7 m. m.
Please advise availability of pistons and ring kits - prefer high compression 9.5 or 10.5 to 1.
Thanks.
Ian.
-2
Hi I have a 1970 T120 RT Bonneville, With the 750 Original big bore Kit, Do you have pistons for it, Thanks Ian


-8
I have a worn 3 inch routt kit and need oversize pistons in 10 1/2 : 1. Do you have any in stock?
-11
Shipping Estimation
You can use this section to calculate shipping costs on all available methods for the item on this page, or your entire shopping cart.
  • Yes No

Upload images for this product