Isuzu 4JJ1 Upgraded Valve Springs and Retainer Kit

4JJ1 Performance Valve Springs and Titanium Retainer Kit to suit Isuzu 4JJ1TC engines.

These 4JJ1 Upgraded Valve Springs are a drop in upgrade - No modification required.  Uses standard valve stem seals and collets.  

4JJ1 Valve Spring Kit Specs:

Spring Construction: 6 coils, 4 mm thick, clockwise, OD=29.8, ID=22.1

Installed spring pressure: 44 to 46 kg (97 to 101.4 lbs.) @ 37.8 mm (1.488") 

This is a 120% increase over OE ute/pass intake and exhaust springs.

Coil Bind: 24.1 mm (0.948")

Afterpay, Humm, Klarna and Zip Available

Free Express Shipping Australia Wide

Note: 

The titanium retainers are not standard and should only be used with these springs.

Only sold as a set.