 Stock front sway bar question |
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| sixaddict |
 Dec 2 2025, 08:24 AM
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#1
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Senior Member  Group: Members Posts: 1,001 Joined: 22-January 09 From: Panama City Beach, FL Member No.: 9,961 Region Association: South East States 
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My understanding is the stock front sway bar is 15 and 16mm for -4 and -6, respectively.
Could one of the smart guys here put a value on the delta for a street driving application. Thanks |
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| mepstein |
Dec 2 2025, 10:50 AM
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#2
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914-6 GT in waiting Group: Members Posts: 20,271 Joined: 19-September 09 From: Landenberg, PA/Wilmington, DE Member No.: 10,825 Region Association: MidAtlantic Region
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Very little delta - in my opinion. It’s what Porsche felt would be optimal for a stock setup - in the 70’s. Probably on much different tires than you are driving now.
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| rfinegan |
Dec 2 2025, 11:19 AM
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#3
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Senior Member Group: Members Posts: 1,143 Joined: 8-February 13 From: NC Member No.: 15,499 Region Association: MidAtlantic Region
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FWIW: My 75 did not have ANY sway bars the I got it...but now has a 19 mm front(like OEM configuration ) and the OE 16 rear bar. Amazing on the street
REMEMBER the springs has as much to do with sway control/handling as the bars Stock front and 120lb rears Ride quality is still very good |
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| brant |
Dec 2 2025, 12:36 PM
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#4
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914 Wizard Group: Members Posts: 12,104 Joined: 30-December 02 From: Colorado Member No.: 47 Region Association: Rocky Mountains 
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with modern tires and handling as a goal
the larger the sway bar the better the car will handle. I run 21mm in street car and bigger in race car. but if your going for full authenticity... I've heard the -6 bar is really hard to find as it was not a common option and may have been mostly installed on race cars in the day. |
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| Jamie |
Dec 2 2025, 12:58 PM
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#5
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Senior Member Group: Members Posts: 1,170 Joined: 13-October 04 From: Georgetown,KY Member No.: 2,939 Region Association: South East States
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QUOTE(sixaddict @ Dec 2 2025, 06:24 AM)  My understanding is the stock front sway bar is 15 and 16mm for -4 and -6, respectively. Could one of the smart guys here put a value on the delta for a street driving application. Thanks I installed a stock front bar to my original 1.7L 73 several years ago, and she "dances on the Dragon!"Body roll is minimal yet very comfortable in tight handling situations in street use, as well as on "spirited" driving events, and 100 LB springs in back.. Attached thumbnail(s) 
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