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Business Card Error!
Valued Customers,
Recently at the 2009 IMIS Show, we mistakenly handed out business cards with an incorrect phone number on them. The phone number on these cards reads 303-783-2235.
Our correct phone number is 303-783-2234. This number is correct on all other documents that we are aware of, and has been corrected on our current cards. New cards will be handed out at the 2009 PRI show in Orlando, FL. Please feel free to stop by and see us in booth #701.
We apologize for any inconvenience this may have caused you and are looking forward to doing business with you.
Our best regards,
Winberg Crankshafts Management
Check Out Our New Ad in Drag Illustrated!
NEW! Micro Polish Option!
Introducing our new ultra-bright micro-polish. As one of the leading manufacturers in crankshaft technology, we have brought the micro-polish process in house to give racers the complete package in crankshaft finishing. Benefits include a 1µ” RA journal finish and the added advantage of increased oil shedding to reduce parasitic losses.
NEW! Mitsubishi 4G63 Billet Crankshafts!
New to our line of products are the Mitsubishi 4G63 crankshafts. Designed in house, we took concepts from our race proven V8 crankshafts and made a Mitsubishi crankshaft like none other on the market.
Engineered for 12,000+ r.p.m. and made with similar geometry and material as our crankshafts that are rated for applications of over 2,000 hp, we are confident our 4G63 crankshafts will meet your needs and more.
Available in 4 or 8 counterweight configurations, 6 or 7 bolt flange and a variety of strokes ranging from 88mm to 100mm.
Weight fully balanced : 26 lbs. (difference between 4 and 8 counterweight is less than 1 lb.)
NEW! Small Block Chevy Forgings

Winberg’s new line of Forged small block Chevy crankshafts is here! We manufacture our Forged crankshafts with the same care and attention to detail as our world famous billet crankshafts. Every aspect of the crankshaft is closely examined and quality checked before it is shipped to ensure the maximum performance possible out of a forged crankshaft.
Each crankshaft starts as a non-twist, progressive die, 4340 steel forging. All processes are done in-house at our manufacturing facility, including numerous quality checks. The result is a top of the line, 100% American made Forged crankshaft.
Standard features include scalloped flywheel flange and main and rod lightening holes, as well as our proprietary counterweight design for increased bearing life. Available in a wide range of strokes and sizes. Small block or big block snouts available. Please see Forging page, Inventory page or call for more details.Winberg Applies New Spline For Blown Fuel/Alcohol!
Splined Snouts are now available for Top Fuel and Top Alcohol Hemi crankshafts. Designed for high HP blower motors to transfer energy more efficiently to the blower assembly. Our new design eliminates keyway galling and disfigurement by increasing contact surface area. Another Winberg first in NHRA!
What's New
Here you'll find Winberg news and announcements, including our latest innovations in crankshaft technology.
