Does the Front Super Lock LSD for XP210 include the rear unit?

No. This Front Super Lock LSD for XP210 cars is the front differential, part number TY361-HA01. OS Giken sells the rear unit for the GR Yaris separately as TY361-HA. Owners who want a locked axle at both ends of the GR-FOUR system buy both, and many fit them together to save a second round of labor.

Is it worth fitting on a Circuit Pack car with factory Torsen units?

For hard track or gravel use, often yes. A torque-sensing differential can only bias torque while both wheels carry load, so it loses drive when an inside wheel lifts. A clutch-type unit keeps transmitting torque through the friction plates in that situation. For road driving alone, the factory units are adequate.

Will it fit the GR Corolla?

OS Giken lists part number TY361-HA01 for the XP210 GR Yaris only. The GR Corolla uses a related drivetrain, but this part is not listed for it, so Bulletproof Automotive recommends confirming with OS Giken before ordering for any car other than the GR Yaris.

Is the OS Giken Super Lock usable on the street?

Yes. OS Giken designs the Super Lock to run a low preload while still progressing to full lock, and its Japanese catalogue describes it as one of the quietest and easiest LSDs to live with in city driving. That suits a GR Yaris that is driven to events as well as used at them.

Can OS Giken retune it later?

Yes. OS Giken retunes Super Lock units in-house. Cone springs set initial torque, pressure ring springs set how quickly full lock arrives, and the pressure ring and iron cross set the ramp angles. TCD spec discs can also be fitted for better oil cooling on long events.

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Description

OS Giken Front Super Lock LSD for XP210 Toyota GR Yaris

OS Giken’s Front Super Lock LSD for XP210 Toyota GR Yaris puts a clutch-type differential at the front of the GR-FOUR drivetrain, where the G16E-GTS three-cylinder delivers most of its torque on corner exit. Base RZ cars leave the factory with open front and rear differentials, and even the Circuit Pack’s torque-sensing units give up drive when an inside wheel goes light over a curb; the Super Lock keeps pulling through the patented OS Giken pressure ring instead. It is the part for a GR Yaris that does gravel stages, time attack or tight club circuits. Paired with the matching rear unit, it gives the car a mechanically locked axle at both ends.

Design and Performance

OS Giken carries the friction plates on splines that pass through the side gears, a layout that fits up to twice the plates of rival designs. That plate area lets the unit run a low preload in town and still reach full lock progressively under power. The case is machined from one billet, the gears are raw-forged, and every component is chemically heat treated.

Features

Clutch-type front differential for the GR-FOUR system
Patented pressure ring for progressive, predictable lock-up
Through-side-gear plate splines for up to twice the plate count
Low preload for road use between events
Billet case, raw-forged gears and heat-treated steel components
Retunable by OS Giken for initial torque, lock timing and ramp angle

Applications

Toyota GR Yaris: XP210 | 2020-present | 1.6L G16E-GTS turbo three-cylinder

Notes

This is the front unit; the rear Super Lock LSD for XP210 cars is sold separately as part number TY361-HA
Installation labor is not included
OS Giken lists this part for the XP210 GR Yaris; other models sharing the GR-FOUR system are not listed

Frequently Asked Questions

Does the Front Super Lock LSD for XP210 include the rear unit? No. This Front Super Lock LSD for XP210 cars is the front differential, part number TY361-HA01. OS Giken sells the rear unit for the GR Yaris separately as TY361-HA. Owners who want a locked axle at both ends of the GR-FOUR system buy both, and many fit them together to save a second round of labor.
Is it worth fitting on a Circuit Pack car with factory Torsen units? For hard track or gravel use, often yes. A torque-sensing differential can only bias torque while both wheels carry load, so it loses drive when an inside wheel lifts. A clutch-type unit keeps transmitting torque through the friction plates in that situation. For road driving alone, the factory units are adequate.
Will it fit the GR Corolla? OS Giken lists part number TY361-HA01 for the XP210 GR Yaris only. The GR Corolla uses a related drivetrain, but this part is not listed for it, so Bulletproof Automotive recommends confirming with OS Giken before ordering for any car other than the GR Yaris.
Is the OS Giken Super Lock usable on the street? Yes. OS Giken designs the Super Lock to run a low preload while still progressing to full lock, and its Japanese catalogue describes it as one of the quietest and easiest LSDs to live with in city driving. That suits a GR Yaris that is driven to events as well as used at them.
Can OS Giken retune it later? Yes. OS Giken retunes Super Lock units in-house. Cone springs set initial torque, pressure ring springs set how quickly full lock arrives, and the pressure ring and iron cross set the ramp angles. TCD spec discs can also be fitted for better oil cooling on long events.

About OS Giken

OS Giken was founded in Okayama, Japan in 1973 by Masaharu Okazaki. It built the TC16 and TC24-B1 DOHC cylinder heads for Nissan L-series engines, began making multi-plate racing clutches in 1982 and started supplying OEM limited-slip differentials in 1983. Development of the Super Lock LSD began in 1997, and of the OS-88 sequential gearbox for the Skyline GT-R in 1998.

Additional Information

The Bulletproof Automotive website contains many thousands of products purchased in multiple different currencies. All of the prices are entered manually and accurately at the time of entry. Due to the consistently fluctuating international exchange rates, at times prices may not be able to be honored at their original intended rate. We apologize for any inconvenience this may cause, unfortunately our website is unable to compensate dynamically for what can at times be volatile changes in the cost of items due to currency values fluctuating, changes in prices from suppliers, changes in shipping and import duties, and other factors. Rest assured that any order you place on line will be at zero risk to you in this area. If in the event your order cannot be fulfilled at the original intended website price we will offer you a 100% refund, no questions asked. We will continue to do our best to maintain updated prices and we will always continue to offer our price match guarantees as well to ensure our prices are always the best for you. In short, prices may change without notice. It is always advised to give us a call prior to placing your order online to confirm availability and to confirm current pricing.

Shipping Policy

Items that are in stock in the US, either at Bulletproof’s warehouse or at a supplier’s warehouse, are generally delivered within 7-10 days. Special order items from overseas take considerably longer. As a courtesy Bulletproof offers delivery estimates to our customers which take into consideration manufacturer availability and shipping schedule. These estimates represent our best guess based on previous orders from the manufacturer and do not in any way imply a guaranteed delivery window. Many manufacturers work in a “just in time” inventory system and often take 2-20+ weeks to produce an item once an order is submitted. All deliverable items are then sent to our Japanese warehouse. Bulletproof ships a minimum of one full ocean freight container every month from Japan, oftentimes more than one a month. Ocean freight takes an average of 4 weeks. Typically it breaks down to one week in Japan for paperwork and customs, two weeks by boat and one week in US customs/clearance. Due to the wide number of variables between manufacturer and shipping schedules, delivery estimates are simply just that – estimates. We attempt to estimate conservatively and we usually deliver faster than our estimates suggest. It is not Bulletproof’s policy to guarantee delivery time of any special order item, this is impossible for us to do. By ordering you acknowledge that there is no required delivery ETA and an order may not be canceled or altered due to manufacturing or shipping delays, all ETA’s are provided as a best guess only. Please review the full Terms & Conditions here.

BP Pricing Difference

We do pricing a little differently on our JDM brands and we believe in making things simple and clear. No hidden fees or surcharges. Every price you see includes the shipping cost to our office in Los Angeles, California and all the associated taxes/duties/fees for bringing the products into the US. The only shipping you ever pay is from our facility in the US to your location. Be wary of resellers that don’t include the cost of international shipping in their pricing on JDM parts. While we believe we’ll always have the lowest all-in price on JDM products, we offer a price match guarantee for all authentic parts purchased from authorized dealers as well. For many international customers, it’s much more affordable to ship from the USA than from Japan directly, as the air freight and ocean freight costs are typically much less. However, for customers looking to ship directly from Japan outside of North America, or domestically in Japan, we can provide pricing specifically for that scenario. Please do not hesitate to contact us with any pricing questions or concerns. Please email us at sales@bulletproofautomotive.com with any inquiries.

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OS Giken Front Super Lock LSD for XP210 Toyota GR Yaris [TY361-HA01]

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OS Giken Front Super Lock LSD for XP210 Toyota GR Yaris

Design and Performance

Features

Applications

Notes

Frequently Asked Questions

About OS Giken

Reviews