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Manley Valve Spring Kit

3 Reviews

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  • Manley Valve Spring Kit
  • Manley Valve Spring Kit
Product may vary from photo(s).

$142.99

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3 Reviews

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J&P Part: 434-358

Description for Manley Valve Spring Kit 

Manley Valve Spring Kit

• Features stock O.D. springs, interference fit to reduce harmonics and control spring surge

• Springs have 20% more pressure than stock

• For use with cams up to .490″ lift

• No machining required for installation

• .750″ coil bind

Made In The USA This product was proudly made in the USA

Product Specs

Sold in Units: Set

Fitment for Manley Valve Spring Kit 

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Click (+) to view all compatible models

Harley-Davidson® Models

Sportster 1000 Café Racer XLCR1000 : 1977–1978
Sportster 1000 Electric Start Anniversary XLH1000 : 1978
Sportster 1000 Electric Start XLH1000 : 1985
Sportster 1000 Roadster XLS1000 : 1979–1981, 1983, 1985
Sportster 1000 Touring XLT1000 : 1977
Sportster 1000 XR-1000 : 1983–1984

Customer Reviews for Manley Valve Spring Kit 

Overall Rating:
5/5 based on 3 ratings

5 by

Just ordered this kit so will give further review upon receipt. The tech support was very friendly..however he couldn't confirm what all is included in this kit..mainly the upper collars which is pictured on the valves for this kit. Apparently J&P gets these through a third party logistics Drag Specialty which I wish never existed. They take name brand items such as Manley and 're-brand' them to their name and Jack up the price..lose all specifications of the item and so on. Manley part #99217 consist of the inner and outter springs and the Manley steel upper collars. Manley part #99217K is the same kit with the hardened chromoly valve stem keepers included. I just wish J&P could get their information straight. That's all I got for now..will update upon getting them.

5 by

Working just great

5 by

great parts sporty runs great

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