Availability
Crankshaft, Magnum, 2-Piece Seal, Forged 4340 Steel, 3.875 in. Stroke, 6.000 in. Rods, 2.100 Pin, 400 Main, Big Block Post, Chevy, Small Block, Each
Part Number: CPI-SMM21AMG
Not Yet Reviewed
Estimated Ship Date: Dec 22, 2025 if ordered today
Estimated Ship Date: Dec 22, 2025 if ordered today
Crankshaft, Magnum, 2-Piece Seal, Forged 4340 Steel, 4.250 in. Stroke, 6.250 in. Rods, 2.100 Pin, 400 Main, Big Block Post, Chevy, Small Block, Each
Part Number: CPI-SMP21A-MG
Not Yet Reviewed
Estimated Ship Date: Dec 22, 2025 if ordered today
Estimated Ship Date: Dec 22, 2025 if ordered today
Crankshaft, 2-piece Seal, Internal Balance, Forged 4340 Steel, Big Block Chevy Snout, 4.125 in. Stroke, 2.100 in. Pin, Chevy, 400, Each
Part Number: CPI-SMU21A-MG
Not Yet Reviewed
Estimated Ship Date: Dec 22, 2025 if ordered today
Estimated Ship Date: Dec 22, 2025 if ordered today
RB 30 MAGNUM BILLET 94.5 MM STROKE
Part Number: CPI-J089F9-MB
Not Yet Reviewed
Estimated Ship Date: Dec 22, 2025 if ordered today
Estimated Ship Date: Dec 22, 2025 if ordered today
CALLIES GEN 3 HEMI MAGNUM 4.050 STROKE 2.100 JOURNAL
Part Number: CPI-S0050
Not Yet Reviewed
Estimated Ship Date: Dec 22, 2025 if ordered today
Estimated Ship Date: Dec 22, 2025 if ordered today
CALLIES LS ULTRA BOOST 4.600 / 2.750 / 2.200 SBC WIDTH
Part Number: CPI-AP457X-UB
Not Yet Reviewed
Estimated Ship Date: Dec 22, 2025 if ordered today
Estimated Ship Date: Dec 22, 2025 if ordered today
CALLIES LS CCW MAG 3.350 / 2.559 / HONDA
Part Number: CPI-AP8639W-MG
Not Yet Reviewed
Estimated Ship Date: Dec 22, 2025 if ordered today
Estimated Ship Date: Dec 22, 2025 if ordered today
MAGNUM LS CRANK 3.325 2.5585 2.100
Part Number: CPI-AP8D31V-MG
Not Yet Reviewed
Estimated Ship Date: Dec 22, 2025 if ordered today
Estimated Ship Date: Dec 22, 2025 if ordered today
CALLIES MAGNUM LS CRANK 3.380/2.558/2.100
Part Number: CPI-AP9831W-MG
Not Yet Reviewed
Estimated Ship Date: Dec 22, 2025 if ordered today
Estimated Ship Date: Dec 22, 2025 if ordered today
MAGNUM LS1 CRANK 4.250 2.5585 2.100
Part Number: CPI-APP-31V-MG
Not Yet Reviewed
Estimated Ship Date: Dec 22, 2025 if ordered today
Estimated Ship Date: Dec 22, 2025 if ordered today
CALLIES LS MAGNUM CRANK SHORT POST CCW 4.250 STROKE
Part Number: CPI-APP-31W-MG
Not Yet Reviewed
Estimated Ship Date: Dec 22, 2025 if ordered today
Estimated Ship Date: Dec 22, 2025 if ordered today
CALLIES LS ULTRA BOOST 4.250 / 2.559 / 2.000
Part Number: CPI-APP-34-UB
Not Yet Reviewed
Estimated Ship Date: Dec 22, 2025 if ordered today
Estimated Ship Date: Dec 22, 2025 if ordered today
CALLIES LS ULTRA DIRT CRANK 4.250/2.559/2.000 x 1.825 WIDE
Part Number: CPI-APP-3P-UD
Not Yet Reviewed
Estimated Ship Date: Dec 22, 2025 if ordered today
Estimated Ship Date: Dec 22, 2025 if ordered today
LS ULTRA BOOST 4.250 / 351C / 2.100
Part Number: CPI-APP-71-UB
Not Yet Reviewed
Estimated Ship Date: Dec 22, 2025 if ordered today
Estimated Ship Date: Dec 22, 2025 if ordered today
MAGNUM CRANK 3.750 350 2.100 BBPOST 1PC
Part Number: CPI-CMJ-11A-MG
Not Yet Reviewed
Estimated Ship Date: Dec 22, 2025 if ordered today
Estimated Ship Date: Dec 22, 2025 if ordered today
MAGNUM CRANK 4.000 350 2.000
Part Number: CPI-CMO-14A-MG
Not Yet Reviewed
Estimated Ship Date: Dec 22, 2025 if ordered today
Estimated Ship Date: Dec 22, 2025 if ordered today
MAGNUM FORD CRANK 3.625 351C 2.100
Part Number: CPI-EFH-71V-MG
Not Yet Reviewed
Estimated Ship Date: Dec 22, 2025 if ordered today
Estimated Ship Date: Dec 22, 2025 if ordered today
Crankshaft, Magnum, 1-Piece Seal, Forged 4340 Steel, 4.000 in. Stroke, 6.200 in. Rod, Internal Balance, Ford, Small Block, Each
Part Number: CPI-EFO71V-MG
Not Yet Reviewed
Estimated Ship Date: Dec 22, 2025 if ordered today
Estimated Ship Date: Dec 22, 2025 if ordered today
CALLIES SB FORD ULTRA DIRT CRANK 4.125/ 2.750/ 2.100
Part Number: CPI-EFU-71V-UD
Not Yet Reviewed
Estimated Ship Date: Dec 22, 2025 if ordered today
Estimated Ship Date: Dec 22, 2025 if ordered today
MAGNUM BBC CRANK HEMI FLANGE 4.500
Part Number: CPI-GBQ-42B-MG
Not Yet Reviewed
Estimated Ship Date: Dec 22, 2025 if ordered today
Estimated Ship Date: Dec 22, 2025 if ordered today
ULTRA BOOST LS 4.625/2.750/2.100
Part Number: CPI-APR-71-UB
Not Yet Reviewed
Estimated Ship Date: Dec 22, 2025 if ordered today
Estimated Ship Date: Dec 22, 2025 if ordered today
CALLIES ULTRA BILLET CRANK 4.750/2.559./2.200
Part Number: CPI-APS-7X-UB
Not Yet Reviewed
Estimated Ship Date: Dec 22, 2025 if ordered today
Estimated Ship Date: Dec 22, 2025 if ordered today
ULTRA DIRT CCW LS CRANK 3.550 2.559 2.000
Part Number: CPI-APT-34V-UD
Not Yet Reviewed
Estimated Ship Date: Dec 22, 2025 if ordered today
Estimated Ship Date: Dec 22, 2025 if ordered today
ULTRA BOOST LS CRANK 4.125 2.559 2.100
Part Number: CPI-APU-31-UB
Not Yet Reviewed
Estimated Ship Date: Dec 22, 2025 if ordered today
Estimated Ship Date: Dec 22, 2025 if ordered today
MAGNUM LS1 CRANK 4.125 2.5585 2.100
Part Number: CPI-APU-31V-MG
Not Yet Reviewed
Estimated Ship Date: Dec 22, 2025 if ordered today
Estimated Ship Date: Dec 22, 2025 if ordered today
Modal Header
Call To Order
This is a custom order part. You can order this part by Contacting Us.
Truck / SUV
Jeep®
Restoration
Stock Replacement
Late Model Muscle
Tools
Gifts, Clothing, & More
Circle Track
Street Rod
Powersports
Paint & Body
Marine
Jr Dragster
