T: (800) 992-7007

P: (530) 886-0771

All orders ship from the U.S.A.

Keeping classic Minis on the road since 1974

(800) 992-7007 | (530) 886-0771

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  • Condition: new
  • Sold -999
  • Made in the U.S.A.
  • DOT-approved False
  • This item qualifies for NESTED shipping; a pair can ship (almost) as cheaply as a single item!Nested Shipping Item
Price: $99.95
99.95
    SKU:  21253
    Availability: In Stock
    In Stock
    Piston Size:
    • 020
    • 040
    • 060
    • STD


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    High compression, dish-top 3-ring 1275cc piston from OEM supplier. Ideal for Cooper S spec 1275cc road engines. Thin-ring low-friction design is stronger than 21251 piston in area of oil control ring. Supplied with rings and pin. Sold each.

    Assembly Note: This piston will normally fit an undecked block, but the taller compression height of 1.5276" requires checking piston/deck clearance by test installing a single piston on the rod and attached to the crank. This is especially important when the block has previously been decked. Additionally, if you are taking your 1275 rods to a machine shop for piston installation, please note the offset of the rods in the block and advise your machine shop of the exact orientation. This is a somewhat unusual feature of the 1275cc engine and the shop must be made aware to prevent installation error.

    Single piston replacement ring sets available separately, see R41570.

    PACKAGING UPDATE: Item(s) may be packaged in either style shown, but please be assured that the same item(s) are in each. AE Hepolite is now owned by Federal Mogul and trademarked "Nural"

    In Stock

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