S&S 80" Piston Set 3-1/2" +.030" 8:1 Harley-Davidson Shovelhead 1979-1984

$859.99 USD

Multi-buy discount

  • Free tracked shipping across the USA
  • Dispatched in 1-3 business days
  • Prices in USD
  • Fitment support: send your make, model and year
Product details

The wrong part stalls the whole job. Check the details below against your bike before you order: if a spec isn't listed, we don't have it on record, and we'd rather you ask than guess.

Listed for Harley-Davidson 1979 to 1984: check your model against the table below.

Fits Harley-Davidson, 1979 to 1984
Part number 106-5514
Condition new
  • "80"" Piston Set
  • NOTE: Does not fit 1984 Evolution engines
  • The 80"" pistons may be used together with 4-1/4"" flywheels to build mild stroker engines for 1936-'78 Big Twins
  • However these pistons are only available in 3-1/2"" bore, so 74"" cylinders will need to be bored to 80"" standard bore of 3-1/2""."

Not sure it fits? Send us your make, model and year before you order and we'll check this part against your bike. Orders are dispatched from within the USA and fulfilled in 1 to 3 business days. If a part ever arrives faulty or not as described, a real person sorts it, backed by your consumer rights and our refund policy.