OS Giken
OS Giken Superlock LSD for Toyota Mark X GRX120 4GR-FSE
OS Giken Superlock LSD for Toyota Mark X GRX120 4GR-FSE
Couldn't load pickup availability
OS Giken Superlock LSD - a proven, patented mechanical limited-slip differential featuring the L.T.C.S. (Lock Timing Control System) for smooth, open-diff-like behaviour under light throttle and progressive 100% lock under acceleration. The S.T.S.G. (Spline Through Side Gear) design fits 1.5-2x more friction plates than a conventional LSD, delivering full lock with minimal heat generation and no measurable degradation after 150,000km+ of testing.
Fitment: Toyota Mark X GRX120, 4GR-FSE. For OEM Torsen LSD type, requires 2x Toyota 41309-22050 side flange.
Share
We do our best to keep our products in stock, but it isn't always possible.
Most of our items are made to order and completed in limited runs — if this applies to your item, it'll be noted on the product page.
Typical turnaround is 2–3 weeks, and if your item needs additional time, we'll notify you with a confirmation and estimated ship date after ordering.
