Crankshaft Oil Seal for Honda GX390
Crankshaft oil seal fits Honda GX340, GX390, 420cc and 460cc engines. Use this seal on both the PTO or Flywheel side. Engine requires two per engine so order a quantity of two per engine.
ARP Side Cover Bolt for Honda GX390, 460cc
ARP crankcase side cover bolt fits Honda GX340, GX390, 420cc, and 460cc big block clone engines. Order a total of 7 bolts for Honda GX340 and GX390. Order a total of 10 bolts for 460cc big block clone engines.
Magnetic Oil Drain Plug, Honda GX390
Bullfrog Performance Products magnetic oil drain plug for Honda GX390 and big block clones. Billet aluminum drain plug includes the copper gasket. Our plug is a nice upgrade to catch any signs of engine trouble by catching the magnetic particles that may be in your engine oil.
Cylinder Deck Spacer 1/2" Thick Big Block
Bullfrog Performance Products cylinder deck spacer fits 460cc big blocks with 92mm bore x 1/2" thick and is used to increase the deck height of the cylinder block. It is preferred to weld our spacer onto your block and re-sleeve the cylinder for best results.
Cylinder Deck Spacer 1/4" Thick Big Block
Bullfrog Performance Products cylinder deck spacer fits 460cc big blocks with 92mm bore x 1/4" thick and is used to increase the deck height of the cylinder block. It is preferred to weld our spacer onto your block and re-sleeve the cylinder for best results.
Engine Mount, 460cc Big Block
Bullfrog Performance Products big block engine mount plate will fit 460cc engine base plate dimensions that are longer than the Honda GX390. Machined from billet aluminum and ready to bolt to a Burris Racing BMC541 or BMC542 chassis mounts and many other Burris Racing kart chassis mounts.
Cylinder Block, 460cc 10 Bolt 92mm Bore
Bullfrog Performance Products 92mm 460cc cylinder block. Our block features a 10 bolt side cover and a tall deck to allow for even more stroke without the piston popping up above the deck. Our cylinder block accepts all Honda GX390 internals, including camshaft, lifters and cranks seals.
Bullfrog Torq-N-Rev Big Block Billet Connecting Rod GX390 4.450" Length
Bullfrog Performance Products billet connecting rod fits Honda GX340, GX390, 420cc clone, 440cc clone and 460cc big block engines. Our Torq-N-Rev billet connecting rod is CNC machined from 7075 T-6 billet aluminum and includes babbit rod bearing set and ARP rod bolts and washers. This billet rod is 4.450" center to center length. Heavy duty rod cap and beam design for the most extreme engine setups. Fits stock piston pin or aftermarket pistons with the standard piston pin diameter.
Bullfrog Torq-N-Rev Billet Connecting Rod, Honda GX390 4.650" +.200" Longer Than Stock
Bullfrog Performance Products Torq-N-Rev billet connecting rod is manufactured from billet 7075 T-6 aluminum. Our billet connecting rod includes rod bearings and setup with ARP rod bolts. Our billet rod is +.200" longer than stock length of 4.650" center to center length. Works with our forged big block piston kits with .900" compression height.
Clutch, Bully Turbo 1" (less drive gear)
Bully Turbo 1" clutch for GX390, 460cc and V-Twin big block engines with 1" diameter output shaft. This clutch sku doesn't include the drive gear as they are sold separately on our website.
Billet Crankshaft, Big Block Honda GX390, +.200 Stroker
New from ARC Racing is a billet crankshaft for the big block clone 460cc or Honda GX390 engine. This billet crankshaft has +.200" more stroke than the Honda GX390 factory crankshaft. Crank stroke is 69mm. If using this crankshaft in the Honda GX390 block you will need to mill the top of your piston to achieve the correct deck height.