OS Giken Super Lock LSD – Front Differential – 2020–2024 Toyota GR Yaris (XP210) | G16E-GTS | Japan-Made Clutch-Type LSD

The OS Giken Super Lock LSD for the front differential of the 2020–2024 Toyota GR Yaris (XP210) is one of the most premium limited-slip differential upgrades available for the GR Yaris platform — a Japan-made clutch-type LSD engineered by OS Giken, one of the most respected drivetrain and engine component manufacturers in Japanese motorsport. The GR Yaris's GR-FOUR AWD system uses a front differential that, in factory form, limits the front axle's ability to distribute torque effectively under hard acceleration and cornering. The OS Giken Super Lock LSD replaces the factory front differential internals with a precision clutch-type LSD that provides controlled, progressive locking action — improving traction, improving cornering exit performance, and giving the GR Yaris's front axle the mechanical LSD it deserves. OS Giken is a legendary Japanese manufacturer with decades of motorsport development experience — their Super Lock LSD is trusted by professional drivers and serious enthusiasts across Japan and internationally.

Key Features:

• OS Giken Super Lock clutch-type LSD — OS Giken's proven Super Lock clutch-type limited-slip differential design — controlled, progressive locking action that transfers torque to the wheel with traction when wheel speed differential is detected
• Front differential application — engineered for the GR Yaris XP210's front differential housing — correct for the GR-FOUR AWD system's front axle
• Japan-made — manufactured in Japan by OS Giken — the same manufacturing quality and precision that OS Giken applies to their motorsport and OEM-supply components
• Clutch-type design — clutch-type LSD provides controlled, tunable locking action — more progressive and predictable than a helical LSD, and more suitable for high-performance and motorsport applications where precise torque distribution is required
• Improved front traction — the Super Lock LSD significantly improves front axle traction under hard acceleration — reducing front wheel spin and improving drive out of corners
• Improved cornering performance — the controlled locking action improves the GR Yaris's ability to put power down on corner exit — a meaningful improvement in lap time and driving confidence on track
• OS Giken quality — manufactured by OS Giken, one of the most respected drivetrain component manufacturers in Japanese motorsport

OS Giken Super Lock LSD — The Technology:

The OS Giken Super Lock LSD is a clutch-type limited-slip differential — using a stack of clutch plates that engage progressively as wheel speed differential increases between the two driven wheels. When one front wheel begins to spin faster than the other (as occurs under hard acceleration or when one wheel loses traction), the clutch plates engage and transfer torque to the slower-spinning wheel — the wheel with traction. The engagement is progressive and controlled — not the sudden, binary locking action of a spool or weld differential. The Super Lock's clutch pack preload and ramp angles are engineered by OS Giken for the specific application — in this case, the GR Yaris XP210 front differential — providing the correct balance of locking action for both street and track use.

GR Yaris Front Differential — Why an LSD Matters:

The 2020–2024 Toyota GR Yaris uses the GR-FOUR AWD system — a sophisticated AWD system with a torque-splitting centre differential that can distribute torque between the front and rear axles. However, the front differential itself is an open differential in factory form — meaning that under hard acceleration or when one front wheel loses traction, the open differential will send torque to the wheel with the least resistance (the spinning wheel) rather than the wheel with traction. This limits the GR Yaris's ability to put power down effectively on corner exit and reduces front axle traction under hard acceleration. The OS Giken Super Lock LSD replaces the factory open front differential with a clutch-type LSD that actively transfers torque to the wheel with traction — a fundamental improvement in the GR Yaris's front axle performance that complements the GR-FOUR system's torque distribution capabilities.

Specifications:

• Brand: OS Giken
• Part Number: OSGTY361-HA01
• Barcode: TY361-HA01
• Type: Clutch-type LSD (Super Lock)
• Position: Front differential
• Application: 2020–2024 Toyota GR Yaris — XP210 chassis — G16E-GTS engine — GR-FOUR AWD
• Origin: Japan
• Weight: 23 lbs (shipping weight)

Fitment Information:

• 2020–2024 Toyota GR Yaris — XP210 chassis — G16E-GTS 1.6L turbocharged 3-cylinder — GR-FOUR AWD
• Front differential application — replaces the factory front differential internals
• Note: Professional installation by an experienced drivetrain specialist strongly recommended — LSD installation requires correct differential disassembly, correct clutch pack preload setting, correct backlash adjustment, and correct differential fluid specification. A break-in procedure is required after installation. Verify your specific GR Yaris model year and variant before ordering.

What's Included:

• OS Giken Super Lock LSD unit — front differential — 2020–2024 Toyota GR Yaris XP210 (OSGTY361-HA01)
• Refer to OS Giken's product documentation for complete kit contents, installation specifications, and break-in procedure

Installation Notes:

• Professional installation by an experienced drivetrain specialist strongly recommended — LSD installation requires correct differential disassembly, correct clutch pack preload setting, correct ring and pinion backlash adjustment, and correct bearing preload
• Use the correct differential fluid specification for the OS Giken Super Lock LSD — clutch-type LSDs require a specific friction modifier content in the differential fluid — using the wrong fluid will cause clutch pack wear and incorrect LSD behaviour. Refer to OS Giken's fluid specification for this unit.
• A break-in procedure is required after installation — follow OS Giken's break-in procedure to correctly seat the clutch plates before subjecting the LSD to full-load use
• Change the differential fluid after the break-in period — the initial fluid change after break-in removes clutch plate material that is deposited during the break-in process
• Verify correct LSD function after installation — the LSD should engage progressively and smoothly under load — any grinding, chattering, or binding indicates incorrect installation or incorrect fluid specification

Why OS Giken?

OS Giken is one of the most respected drivetrain and engine component manufacturers in Japanese motorsport — a company with decades of experience supplying precision drivetrain components to professional racing teams and serious performance enthusiasts across Japan and internationally. OS Giken's Super Lock LSD is their flagship limited-slip differential design — a clutch-type LSD that has been proven in Japanese touring car racing, time attack, and circuit competition across multiple platforms. For GR Yaris owners who want the most premium, motorsport-proven front LSD available for the XP210 platform, OS Giken Super Lock is the definitive choice.

Perfect For:

• 2020–2024 Toyota GR Yaris (XP210) owners who want the most premium front LSD upgrade available — OS Giken's Japan-made Super Lock clutch-type LSD for improved front axle traction, improved corner exit performance, and motorsport-proven LSD technology
• GR Yaris track day and time attack builds where front axle traction and torque distribution are critical for lap time and driving confidence
• GR Yaris owners who want to complement the GR-FOUR AWD system's torque distribution capabilities with a mechanical front LSD that actively transfers torque to the wheel with traction
• Serious GR Yaris performance builds where OS Giken's motorsport credentials and Japan-made quality are the correct choice for a critical drivetrain component

Note: Professional drivetrain specialist installation required. Use correct OS Giken-specified differential fluid — incorrect fluid will damage clutch pack. Break-in procedure required after installation. Change fluid after break-in period. Verify GR Yaris XP210 model year before ordering.