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WINDSOR FLAT TOP PROFESSIONAL SERIES

    PISTON DESIGN
  • Advanced, lightweight FSR forging that eliminates stress concentrations for superior strength
  • Up to 20% lighter than traditional equivalent
  • High-silicon 4032 aluminum alloy for reduced piston-to-wall clearance and quiet operation
  • Accumulator grooves for improved ring seal
  • Designed for normally aspirated or moderate forced induction/nitrous applications

    RINGS INCLUDED

  • Lightweight, low friction metric ring package included
  • 1.2mm top ring, 1.5mm Napier 2nd ring, 3.0mm standard tension oil ring
  • Napier 2nd ring for improved oil control
  • Standard fit rings, no filing required

    PINS AND LOCKS

  • High quality 2.250" pin further reduces reciprocating weight
  • Carbon steel wire locks included
Professional Series
Std Bore: 4.000
Ring package designed for: Rings Included

Click here to see matching JE Pro Seal Head Gaskets!
Part # CID Bore Stroke Rod
Lgth.
Block
Ht.
Comp.
Ht.
Head Cubic Centimeters
58cc 64cc 70cc
Compression Ratio
Dome
Vol.
Gram
Wt.
Footnote Oversize Recom.
Ring Set
279671 408 4.030 4.000 6.250 9.480 1.230 12.6 11.7 11.0 -5 417 0.030
271099 347 4.030 3.400 5.400 8.200 1.100 10.9 10.1 9.5 -5 395 B 0.030
279524 348 4.040 3.400 5.400 8.200 1.100 10.9 10.2 9.5 -5 399 B 0.040
271097 331 4.030 3.250 5.400 8.190 1.165 10.4 9.7 9.1 -5 407 B 0.030
279670 306 4.030 3.000 5.090 8.190 1.600 9.7 9.0 8.4 -5 466 0.030

- Denotes part # has been issued a new part #. A list referencing old part #s to their new counterparts will be available shortly.


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