Harley-Davidson DYNA FAT BOB Big Bore Kits
Genuine HD big bore kits and aftermarket alternatives that fit the DYNA FAT BOB — all years. Select your year for exact fitment and pricing.
Genuine Harley-Davidson (6)
Genuine Harley-Davidson
3-7/8" Standard Bore Piston Kit
22144-08B
Genuine Harley-Davidson
Screamin' Eagle 4-Inch Big Bore Conversion Kit
92500039
Genuine Harley-Davidson
Big Bore Head Gasket Kit
16101-01
Genuine Harley-Davidson
Screamin' Eagle 103 Stage IV Performance Kit
27516-08F
Genuine Harley-Davidson
Screamin' Eagle MVA CNC Ported Cylinder Heads
16925-11
Genuine Harley-Davidson
High-Compression Piston Kit, 4.060", Standard Bore
22574-10Aftermarket alternatives
Aftermarket big bore kits that fit the DYNA FAT BOB. Genuine Harley-Davidson is listed above, not here.
V-Twin
3 5/8" BIG BORE CYLINDERS AND PISTONS FOR EVOLUTION BIG TWIN
V-Twin
3 5/8" BIG BORE CYLINDERS AND PISTONS FOR EVOLUTION BIG TWIN
Cometic Gasket
COMETIC BIG BORE HEAD & BASE GASKETS FOR TWIN CAM
S&S Cycle
S&S 117CI BIG BORE CYLINDER KITS
James Gaskets
BIG BORE HEAD AND BASE GASKETS FOR EVOLUTION BIG TWIN
S&S Cycle
S&S 3 5/8" BIG BORE POWER PACKAGE FOR EVOLUTION BIG TWIN
S&S Cycle
S&S 3 5/8" BIG BORE POWER PACKAGE FOR EVOLUTION BIG TWIN
Jims
JIMS TWIN CAM BIG BORE CYLINDER GASKET KITS
Cometic Gasket
COMETIC BIG BORE HEAD & BASE GASKETS FOR TWIN CAM
Cometic Gasket
COMETIC BIG BORE HEAD & BASE GASKETS FOR TWIN CAM
Cometic Gasket
COMETIC BIG BORE HEAD & BASE GASKETS FOR TWIN CAM
Cometic Gasket
COMETIC BIG BORE HEAD & BASE GASKETS FOR TWIN CAM