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K20A3 / K24A

A USDM only production engine, the K20A3 and similar cylinder head configurations were developed for a performance, yet economical mindset. Although VTEC, it is only featured on the intake camshaft. The K20A3 is found in the 01-03 Civic Si while the K24A1 is in the 01-03 CR-V. The K24A4 is the most popular of them all due to the fact that was used to service the 03-up Accord as well as the 02-03 Element. Because of it's tall deck height (9.114"), the trend will be to take these blocks and use the K20A/K20Z head found in the 06-up Civic, 01-06 RSX-S for more rpm potential and added tuning ability. However there will be plenty of tuners wanting to stay true and run the original K20A3 head.
<b>BC5047</b> - Honda/Acura K20 Crankshaft - 4340 Billet - 92mm Stroke w/OEM Rod Journal

BC5047

BC5047 - Honda/Acura K20 Crankshaft - 4340 Billet - 92mm Stroke w/OEM Rod Journal

92mm stroke, 47.95mm crank pin, 55mm main - 4340 billet

92mm stroke, 47.95mm crank pin, 55mm main - 4340 billet

$ 2,417.15 $ 2,779.72

<b>BC5048</b> - Honda/Acura K20 Crankshaft - 4340 Billet - 92mm Stroke w/B18A Rod Journal

BC5048

BC5048 - Honda/Acura K20 Crankshaft - 4340 Billet - 92mm Stroke w/B18A Rod Journal

4340 billet with B18A rod journal. All cranks are stress relieved, shot peened, magna flux inspec...

4340 billet with B18A rod journal. All cranks are stress relieved, shot peened, magna flux inspected and nitrided (multi step heat treatment) for ultimate performance. Fully profiled counterweights are designed for reduced windage through the crankcase creating less oil resistance for better rpm potential. Stroke 92mm Rod Journal 45mm Main Journal 55mm Weight 36.5 Lbs

$ 2,417.15 $ 2,779.72

<b>BC5049-103</b> - Honda/Acura K24 Crankshaft - 4340 Billet - 103mm Stroke w/B18A Rod Journal

BC5049-103

BC5049-103 - Honda/Acura K24 Crankshaft - 4340 Billet - 103mm Stroke w/B18A Rod Journal

4340 billet with B18A rod journal. All cranks are stress relieved, shot peened, magna flux inspec...

4340 billet with B18A rod journal. All cranks are stress relieved, shot peened, magna flux inspected and nitrided (multi step heat treatment) for ultimate performance. Fully profiled counterweights are designed for reduced windage through the crankcase creating less oil resistance for better rpm potential. Stroke 103mm Rod Journal 45mm Main Journal 55mm Weight 32.6 Lbs

$ 2,417.15 $ 2,779.72

<b>BC5049-105</b> - Honda/Acura K24 Crankshaft - 4340 Billet - 105mm Stroke w/B18A Rod Journal

BC5049-105

BC5049-105 - Honda/Acura K24 Crankshaft - 4340 Billet - 105mm Stroke w/B18A Rod Journal

4340 billet with B18A rod journal. All cranks are stress relieved, shot peened, magna flux inspec...

4340 billet with B18A rod journal. All cranks are stress relieved, shot peened, magna flux inspected and nitrided (multi step heat treatment) for ultimate performance. Fully profiled counterweights are designed for reduced windage through the crankcase creating less oil resistance for better rpm potential. Stroke 105mm Rod Journal 45mm Main Journal 55mm Weight 37.0 Lbs

$ 2,417.15 $ 2,779.72

<b>BC5049-99 </b>- Honda/Acura K20 Crankshaft - 4340 Billet - 99mm Stroke w/B16A Rod Journal

BC5049-99

BC5049-99 - Honda/Acura K20 Crankshaft - 4340 Billet - 99mm Stroke w/B16A Rod Journal

4340 billet with B18A rod journal. All cranks are stress relieved, shot peened, magna flux inspec...

4340 billet with B18A rod journal. All cranks are stress relieved, shot peened, magna flux inspected and nitrided (multi step heat treatment) for ultimate performance. Fully profiled counterweights are designed for reduced windage through the crankcase creating less oil resistance for better rpm potential. Stroke 99mm Rod Journal 45mm Main Journal 55mm

$ 2,417.15 $ 2,779.72

<b>BC5049</b> - Honda/Acura K24 Crankshaft - 4340 Billet - 102mm Stroke w/B18A Rod Journal

BC5049

BC5049 - Honda/Acura K24 Crankshaft - 4340 Billet - 102mm Stroke w/B18A Rod Journal

4340 billet with B18A rod journal. All cranks are stress relieved, shot peened, magna flux inspec...

4340 billet with B18A rod journal. All cranks are stress relieved, shot peened, magna flux inspected and nitrided (multi step heat treatment) for ultimate performance. Fully profiled counterweights are designed for reduced windage through the crankcase creating less oil resistance for better rpm potential. Stroke 102mm Rod Journal 45mm Main Journal 55mm Weight 33.6 Lbs

$ 2,417.15 $ 2,779.72