Products > Vintage - Flathead Power > 1936-1984 Big Twin Models

Top End products for P, SH, and KN-Series engines and 1936-1984 big twins.

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3 5/8" Bore Cylinder Kit for Flathead Power® KN-Series Engines 3-5/8" Bore Cylinder Kit for Knucklehead Engines Includes 92-1620 Pistons for 4-1/2" Stroke 5.625" Cylinder Length $1,174.95 Details	Flathead Power® Heads for 1940–'47 OHV Big Twins Assembled or Unassembled 14mm or 18mm spark plug hole Gloss Black Finish 1936 - 1947 OHV Big Twin & KN-Series $3,265.00 Details	Flathead Power® Aluminum Heads for 1937–'48 Flathead Side-Valve Big Twin Engines 1937–1948 UL & ULH Models Made to Order Head Bolts NOT Included Natural Finish $625.00 Details
Flathead Power® Cylinders for 1941–'47 OHV Big Twins Made to Order Available in 3 7/16" or 3 5/8" Bore Call/Email For Pricing Details	Flathead Power® Cylinders for 1966–'84 Big Twins and P-Series Engines Made to Order Available in 3 7/16" or 3 5/8" Bore Cylinders Only with Gaskets and Hardware $0.01 Details	Head for P-Series Engines and Retro Conversion Kits O-Ring Style Intake Ports Single Plug, Internal Oiling 1948–1965 Style Natural Finish Choose Bore $1,244.95 - $1,365.95 Details
Rings for 3 7/16" Bore Stroker Pistons 3 7/16 Bore Standard and Oversize (thru +.090') 1966–'84 Big Twins (1) $29.82 Details	Rings for 80" Forged Pistons with 3 1/2'' Bore For 3 1/2" Bore, 80" Pistons Standard and Oversize 1966 - 1984 Big Twins $29.82 Details	Super Stock® Heads for 1966–'78 Big Twins with 3 5/8" Bore Dual Plug .590 Inch Lift Triple Steel Valve Springs Natural Aluminum Finish SH-Series Engines 1966–'78 Big Twins $1,364.95 Details
Super Stock® Heads for 1979–'84 Big Twins with 3 5/8" Bore Dual Plug .590 Inch Lift Triple Steel Valve Springs Natural Aluminum Finish SH-Series Engines 1979-1984 Big Twins $1,364.95 Details	Super Stock® Heads for 1966–'78 Big Twins with 3 5/8" Bore 3-5/8" Bore O-ring Style .590" lift triple steel valve springs, single spark plug, and internal oil return Choose Finish 1966–1978 big twins $1,241.95 - $1,329.95 Details	Super Stock® Heads for 1966–78 Big Twins with Stock Bore Stock Bore, O-ring Style .590" lift triple steel valve springs, single spark plug and internal oil return Choose Finish 1966–1978 Big Twins $1,241.95 - $1,329.95 Details
Super Stock® Heads for 1979–'84 Big Twins with 3 5/8'' Bore 3-5/8" Bore, Band Style .590" lift triple steel valve springs, single spark plug and internal oil return Choose Finish 1979–1984 Big Twins $1,241.95 - $1,329.95 Details	Super Stock® Heads for 1979–'84 Big Twins with Stock Bore Stock Bore, Band Style .590" lift triple steel valve springs, single spark plug and internal oil return Choose Finish 1979–1984 Big Twins $1,241.95 - $1,329.95 Details	3 1/2" Bore Cylinder Kit for 1966–'84 Big Twins 3-1/2" bore X 5.330" cylinder length Includes pistons for 4-1/4" stroke, gaskets and hardware Gloss black finish 1966–'84 big twin $914.95 Details
3 1/2" Bore Cylinder Kit for 1966–'84 Big Twins 3-1/2" bore X 5.330" cylinder length Includes pistons for 4-1/4" stroke, gaskets and hardware Gloss black finish 1966–'84 big twin $970.95 Details	3 5/8" Bore Cylinder Kit for 1966–'84 Big Twins 3-5/8" bore X 5.405" cylinder length Includes pistons for 4-1/2" stroke, gaskets and hardware Gloss black finish 1966–'84 big twin $931.95 Details	3 5/8" Bore Cylinder Kit for 1966–'84 Big Twins 3-5/8" bore X 5.330" cylinder length Includes pistons for 4-1/4" stroke, gaskets and hardware Gloss black finish 1966–'84 big twin $931.95 Details
3 7/16" Bore Cylinder Kit for 1966–'84 Big Twins 3-7/16" bore X 5.330" cylinder length Includes pistons for 3-31/32" stroke, gaskets and hardware Gloss black finish 1966–'84 big twin $914.95 Details	3 5/8" Bore Low Compression Pistons Low Compression +.070" Oversize 1936–'84 big twin $228.95 Details	3 5/8'' Bore Low Compression Pistons Low Compression +.060" Oversize 1936–'84 big twin $317.95 Details
Forged 3 5/8" Bore Piston For 1936-’84 OHV Big Twins 3-5/8" Bore Piston Set Standard and Oversize Available Fits 88", 93", 96", 98" and 103" Engines S&S will fit these pistons to your existing cylinders (when purchasing new cylinders, pistons can be fit to them as an option) 1936 - 1984 Big Twin (1) $278.05 Details	Forged 74" Pistons for 1936-'78 OVH Engines 74" Piston Set Choose 8:1 or 9:1 Compression 1936 - 1978 Big Twin S&S will fit these pistons to your existing cylinders (when purchasing new cylinders, pistons can be fit to them as an option) $278.05 Details	Forged 80'' Pistons for 1979-'84 OVH Engines 80" Piston Set Choose 8:1 or 9:1 Compression 1979–1984 Big Twins May be used in mild stroker engines with 4 1/4" stroke flywheels S&S will fit these pistons to your existing cylinders (when purchasing new cylinders, pistons can be fit to them as an option) $278.05 Details
Forged Stock Bore Stroker Pistons For 1936-’84 OHV Engines Stock Bore Piston Set Choose Standard or Oversize Used in 84" (4-1/2" stroke), 86" (4-5/8" stroke), and 88" (4-3/4" stroke) stock bore stroker engines with stock diameter flywheels S&S will fit these pistons to your existing cylinders (when purchasing new cylinders, pistons can be fit to them as an option) 1936–1984 Big Twin $278.05 Details	Piston Set 3-5/8" Cast Piston Set Low Compression, +.050" Oversize 1936 - ' 84 big twin $305.30 Details	3 5/8" Bore Cylinder Set for 1966–'84 Big Twins 3-5/8" bore X 5.330" cylinder length Cylinders only with gasket and hardware Gloss black finish 1966–'84 big twin $723.95 Details
Piston Ring Set Moly Faced Piston Ring Set 3-5/8" Bore, +.070" Oversize 1966 - 1984 Big Twin $29.95 Details	Piston Ring Set Moly Faced Piston Ring Set 3-5/8" Bore, +.060" Oversize 1966 - 1984 Big Twin $29.95 Details	Piston Ring Set Moly Faced Piston Ring Set 3-5/8" Bore, +.040" Oversize 1966 - 1984 Big Twin $29.95 Details
Piston Ring Set Moly Faced Piston Ring Set 3-5/8" Bore, +.030" Oversize 1966 - 1984 Big Twin $29.95 Details	Piston Ring Set Moly Faced Piston Ring Set 3-5/8" Bore, +.020" Oversize 1966 - 1984 Big Twin $29.95 Details	Piston Ring Set Moly Faced Piston Ring Set 3-5/8" Bore, Standard Size 1966 - 1984 Big Twin $29.95 Details
Piston Ring Set Moly Faced Piston Ring Set 3-5/8" Bore, +.010" Oversize 1966 - 1984 Big Twin $29.95 Details	Cylinder Base Nut Hex head, 7/16 - 20 UNF cylinder base nut Polished stainless 8 pack 1936–'84 big twin $61.95 Details	Oil Bypass Plug 3/8" X 5/16" X 5/8" Included with all S&S® stock bore shovelhead style cylinders. 2 Pack $7.70 Details
Top Engine Mount Top Engine Mount 2 Piece, Natural Steel 1948–1984 Big Twin Fits panhead and shovelhead engines with cylinders up to 5.750" long $42.95 Details

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