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This 58mm (2.283") stroke crankshaft is precision-crafted from ductile iron, a material prized for its ability to flex or bend slightly before breaking. Compared to standard cast crankshafts, ductile iron offers superior shock absorption and enhanced fatigue strength, delivering greater durability and reliability under heavy load and high-stress conditions.
The crankpin and journals are hardened to minimize wear and maximize crankshaft strength, making this an excellent and cost-effective option to increase the stroke and displacement of your clone or Predator engine without the expense of a billet crankshaft.
Important Installation Notes:
Compatible with Clone-style crankpins and flywheel tapers.
Designed to work with ARC Clone Rods; however, clearance modifications to the engine block and camshaft area may be necessary.
Not a drop-in replacement — assembly by an experienced engine builder is highly recommended.
For optimal fitment and performance, we recommend pairing this crankshaft with our EC Pinnacle Connecting Rods.
Engine Displacement Increases with 58mm Stroke:
Stock Engine
Bore Size
New Displacement with 58mm Stroke
196cc Stock
68mm
210.68cc
212cc Stock
70mm
223.21cc
225cc Stock
72mm
236.15cc
232cc Bore
71.5mm
232.88cc
263cc Bore
76mm
263.12cc
Upgrade your engine’s power and durability with this rugged, high-performance 58mm ductile iron crankshaft — a smart and reliable choice for serious engine builders.
Returns- Returns must be communicated by customers within 7 days of delivery and sent back within 30 days to receive a refund. No returns without authorization will be accepted. All returns must be accompanied by a copy of the receipt and a note. All items must be returned complete and in new condition.
All returns are subjected to 20% processing and restocking charge after the product has been inspected. The shipping cost will not be refunded.
Refunds will be made back to the same method of payment when ordering those parts. We will not refund a different method of payment.
Non-returnable Items Include- Close Outs and Clearance Items, Special Orders, Custom Orders, Used Parts, and Cut to Length Items. (Other items may apply)
Shipping: All orders are shipped UPS Ground, UPS Surepost or USPS Priority when ordering online. Shipping charges are calculated based on weight, size, and quantity of boxes in addition to processing and handling including insurance. All shipping charges are the customer's responsibility (even if charges online are not the same as emailed or phone orders).
All standard shipping orders will be shipped within a day or two on weekdays. Orders placed on the weekend (Fri-Sun) will be shipped Monday or Tuesday or the first weekday after a holiday. Custom or Handbuilt Products may require more time to be built before shipping. For any reason, an order may be delayed or prevented you will be contacted through phone and/or email.
Express/2nd Day/Next Day Shipments: Express orders must be made by phone orders only! Orders placed after 12:00 p.m. CST. will be processed the Next Business Day. UPS will only guarantee next day shipment. If you choose 2nd-day shipments expecting it before the weekend, UPS does not guarantee its arrival
Additional Fees: Double Check that the address you gave is correct. You may be charged additional fees to redirect your package to the correct address.
PO Boxes: We can ship to PO Boxes using USPS. However, UPS will only accept shipments to a valid street address. They do not deliver to P.O. Boxes.
International Shipping: International buyers are responsible for paying duties, taxes, and applicable customs brokerage fees separate from the merchandise cost. Buyers will generally pay these fees upon receipt of your shipment. Buyers may be charged additional fees once they receive the package. Read our international policy here.
Paypal: All orders paid by a verified PayPal account will be shipped to the address on the Paypal account to comply with Paypal's policy. No Exceptions.
UPS Estimated Shipping Lead Times
USPS Estimated Shipping Lead Times
