Mark Lin Racing   (August. 2010 issue)  
Vehicle: 2004 Acura RSX
Track   : Race City Speedway (Calgary, Alberta)
OS Giken Product Equipped: TS2A Clutch/Flywheel Kit and OS Super Lock LSD

When arriving at Race City Speedway on August 14th, I noticed that track conditions were ideal that day to run a good time.What I didn't expect was that I would run a much faster time that I had hoped. The OS Giken Super Lock LSD and Twin-Plate Clutch performed the same as the day I installed them a year ago. Throughout the day as I improved my times and as the track and conditions heated up, the Super Lock LSD and Twin-Plate Clutch continued to deliver a consistent and high-level of performance even as the car skipped over the rough track surface and curbing; especially the chicane curbing.

Even with the increased power and torque this year from the supercharger, the car was able to put down the power significantly better than my previous torsen-type LSD when I ran with much lower power. The OS Giken Super Lock LSD and Twin-Plate Clutch helped me run my new personal best of 1:24.3, which was the fastest time in a front-wheel drive and fastest car on street tires by far. The new personal best was also able to beat many of the fellow competition who run higher horsepower and r-compound tires.

Mark Lin Racing
www.marklinracing.com

Randall Smalley and Owen Trinkler on the podium   (August. 2010 issue)  
RSR Motorsports Earns Second Consecutive Win on Streets of Trois-Rivieres

TROIS RIVIERES, Quebec-Randall Smalley and Owen Trinkler earned their second consecutive GRAND-AM Continental Tire Sports Car Challenge win during Saturday's race at Circuit de Trois-Rivieres, putting the No. 198 RSR Motorsports MINI Cooper S at the front of the Street Tuner field. A combination of great handling, superb driving, strategy, and quick pit stops allowed the MINI to win the two-hour Street Tuner race. RSR Motorsports led much of the race at Trois-Rivieres in 2009, and the team knew that strategy and pit stops would be a key factor to leading the way once again.
to be continued to...  www.RSRMotorsports.com

NASA GTS-3 Class racer: Korey Deason(BMW E36 M3)   (August. 2010 issue)  

This past weekend's Mid-Ohio race went well. The forecast for the weekend was hot with a possibility of storms. On Friday practice we worked on car set up with the track temperature over 140 degrees, it must have worked. Saturday's qualifying put me on the GTS-3 pole (starting 3rd overall in GTS). I got a good start both at the beginning of the race and after a full course caution cause by a mid race storm and a few cars needing to be pull out of the gravel pits.

A few laps under green and I had a sizable GTS-3 lead all the way until the finish, ending with the second fastest GTS race time, only falling to the leading GTS-4 car. Sunday's race was a repeat of Saturday only with a different track configuration. Again, for the race I started P3 in GTS overall and P1 in GTS-3. An accident at the start of the race put the first couple of laps under a full yellow but with the help of my spotter letting me know when the track went back to green, I got a great restart. After the restart, I went to work turning the fastest GTS-3 race time along with another win.

The car and O.S. Giken products preformed great all weekend.
Everyone keeps asking where I find all of the exit speed in the turns and I point to the sticker on the side of the car and tell them, "You need to have the OS diff to really understand !"
I love the OS Giken products and the fact that they play a role in putting me on the podium every weekend!

Mini Cooper S Club Racer: What’s the Diff?   (August. 2010 issue)

One-wheel drive is a bummer, and a surprising number of cars are, essentially, one-wheel drive. As long as you're not breaking traction it's not a problem. However, in a higher-horsepower front-wheel-drive car that's constantly shifting its weight around a race track, an open differential is unforgivably bad. Our 2005 MINI Cooper S, though armed with a suite of John Cooper Works performance upgrades and MINI Challenge racing goodies in as-delivered form, was hampered by its mechanically open differential.

A QUIK STOP @ OS Giken - by Dino Dalle Carbonare   (July. 2010 issue)

RB315, TC24, Z33/Z34 close gear and LSD for the R35 GT-R
One of my other ports of call each time I am in Okayama is OS Giken. It's a company I, along with many other enthusiasts around the world, admire for its incredible engineering capabilities ....

#198 RSR Mini Cooper's 1st and 7th at New Jersey  (July. 2010 issue #3-3)

OS Super Lock LSD Equipped #198 RSR Mini Cooper S dominates at New Jersey Motorsports Park for Mini's 1st ever win In Grand American Sports Car racing.

MILLVILLE, N.J.-RSR Motorsports had a weekend of firsts during round eight of the GRAND-AM Continental Tire Sports Car Challenge Series at New Jersey Motorsports Park. Randall Smalley and Owen Trinkler earned the first series win for both RSR Motorsports and MINI, and they did it in the first car built entirely in-house by the RSR crew.

More info can be found at
Grand Am Press Release
Grand Am Official Results
www.youtube.com

OS LSD equipped Scion tC  (July. 2010 issue #2-3)

The Scion tC race team won 1st/2nd (both cars) at Watkins Glen Strong Scion One-Two Finish at Watkins Glen Catapults Team to Toronto Grand Prix DG-Spec Team Tenaciously Overcomes Adversity as Stout and Gardner Podium Their tCs

Sometimes perseverance and a bit of just-in-time luck win the day at the racetrack. This past World Challenge round was no exception, as the team struggled with significant issues on both the number 18 and 36 DG-Spec Scion tCs.
In the end, Stout would take the top step with Gardner right behind. It doesn't get any better than that for a two-car road race team.

More team info can be found at www.facebook.com/scionracing

OS LSD equipped BMW 135i  (July. 2010 issue #1-3)

Berk Technology Time Attack BMW 135i at Redline Time Attack AAA Speedway 2010
Mike Bonanni and the BERK Technology team continue to step closer to a series championship in their OS LSD equipped BMW 135i!

Here is footage from their efforts at the Redline Time Attack event at AAA Speedway in Fontana, which netted them another podium finish in the Street Tire RWD class. Congrats!!

More team info can be found at www.berktechnology.com

How to install a Limited Slip Differencial in a MINI Cooper S  (June. 2010 issue #3-3)

MINI Madness
shows you how to install a limited slip differential on a R53/R56 MINI Cooper S
Great work!



More info can be found at http://www.mini-madness.com/

Rocky Mountain Rally Porcupine Hills May 2010  (June. 2010 issue #2-3)

OS Front and Rear LSD on Subaru GDB Sti on a GC8 shell!
OS is making waves up in Canada, with the VEX Performance / Johnny Summers team
running OS front and rear LSD on their rally-prepped Subaru GDB Sti on a GC8 shell!

After taking the overall championship in Rallycross, the team is starting to make their mark in Pro rally now. This is footage of the recent Rocky Mountain Rally; despite some mechanical issues with their center diff, they were still able to finish 2nd in class and 6th overall, while essentially running the car with rear wheel drive only as well as being underpowered! Keep an eye on them for future events, as once the car is fully sorted out it will definitely be a big contender out there!
More team info can be found at www.johnnysummersracing.com

Subaru STI OS Giken LSD Review  (June. 2010 issue #1-3)

2008+ Subaru STI OS Giken LSD Review
www.team-scs.com

Currently in the final stages of development, feedback for the front and rear LSD for Subaru GDB/GRB Sti has been phenomenal!

According to Ferdie, this LSD combo allows him to "enter corners like a man, and exit like a BEAST!" Vehicle control is greatly increased, and on-throttle steering becomes very predictable and smooth. The rear LSD is currently available and the front LSD should be available in the near future! Keep an eye on this blog for upcoming feedback!

Plan B Rally in California  (May. 2010 issue)

OS Superlock LSD equipped Honda Civic at the May 8, 2010 Plan B Rally in California

Even while running on worn-out tires, George Doganis still wins his class and took 2nd overall finish in his OS Superlock LSD equipped Honda Civic at the May 8, 2010 Plan B Rally in California. On one of the stages he was able to beat everyone, including a rally-prepped Group N Subaru! More evidence that the OS Superlock LSD is well-equipped to handle all forms of automotive motorsport! More info on the Plan B Rally can be found here: www.rallyplanbsite.com

World Challenge Long Beach  (May. 2010 issue)

Robert Stout - Driver DG-Spec #18 Scion tC World Challenge Touring Car
www.scion.com
You definitely cannot feel any wheel spin going through corners. The OS diff is very flexible, and it adjusts always to get the car to turn-in as well as get off the corner. It makes it work just about as well as any rear drive car. It absolutely closes the gap in terms of getting a FWD car to turn versus a rear-driver. During racing there is no sense of any wheelspin at any of the tracks I've driven the Scion on. That includes every track we've been to for testing and racing, even with interesting challenges of changes of elevation.

It has extremely good turn-in ability;
it allows you to get to the apex easily with no problems with the car.

I was very surprised by how well the differential worked;
I had no idea how quickly I'd be able to go to power in a front-wheel-drive car. I really didn't know what to expect, not having driven a FWD car hard, but it handled much better than I ever expected. These Scions with the OS diff shouldn't be under-estimated in terms of how well they handle.
I think the diff plays a big role in that.

COBB Tuning Blog  (Mar. 2010 issue)

COBB Motorsports Nissan GT-R Development Update - OS Giken Rear LSD
The COBB Tuning Motorsports team and I just got back from our first weekend of testing at California Speedway with the new OS Giken NEO rear Limited Slip Differential (LSD)...

OS Giken - Behind The Scenes by Dino Dalle Carbonare   (Feb. 2010 issue)

The Inner Workings Of One Of Japan's Most Well-Respected Tuning Companies.
In order to finish first, you must first finish the race."This is a motto Okazaki-san of OS Giken has built his successful company around...

How to: DIY Non-M E39 -> OS GIKEN LSD upgrade by frgeoff  (Feb. 2010 issue)

Detailed install procedure for OS Superlock LSD on a BMW non-M E39.
Performance difference vs. OEM open diff is phenomenal!

Chris Musante beats PCA Lime rock record  (Jan. 2010 issue)

Watch Chris Musante and his OS GIKEN Super Lock LSD equipped 1974 Porsche 911 RSR (3.6L naturally aspirated engine) beat the all time PCA record at Lime Rock Park with a time of 54.953. Chris has commented that,"For road racing, OS Super Lock LSD's high percent lockup during deceleration allows deep and effective trail braking and better overall braking. On power exiting of corners is smooth and precise due to the increasing lockup percentage during acceleration. This makes for very fast and predictable corner exit."

TTC Lap Record 2:29.970 in the Maitland Importers  (Oct. 2009 issue)
10/03/09 / Revolution Mini Works / Vorshlag motorsports 2003 Mini Cooper S

Ian Stewart battling with a turbo Miata at Sebring. He was able to best the turbo Miata, and set a new track record at 2:29.9. Ian had been told earlier in the year that a TTC car would never run under 2:30 at this track, so it was very satisfying to break this particular record and establish a new benchmark!

Nasa Nationals Miller Motorsports Park TTC  (Sep. 2009 issue)
09/19/09 / Revolution Mini works / Vorshlag motorsports / Time Trial C at Nasa Nationals
Maitland Importers Inc.

Ian Stewart competing at Miller in his OS-equipped Mini, for the TTC National Championship. Although Ian won and set a new TTC track record, this video is not the fast lap but rather a lap chasing the Elise. On a side note, Ian also test drove another Mini that day with lighter weight and similar power, but using a Quaife LSD instead of OS Giken; the Quaife-equipped car handled much differently in the corners, and was posting laps about 2-3 seconds slower than the OS-equipped Mini!

Stratotech- Wet Track Test  (Aug. 2009 issue)
08/02/09 Test car: 2004 Acura RSX / Test track: Stratotech Park

VEXPerformance.com

Stratotech- Dry Track Test  (Aug. 2009 issue)
08/02/09 Test car: 2004 Acura RSX / Test track: Stratotech Park

These 2 videos were taken on August 2, 2009 at Stratotech Park in Front Saskatchewan, AB with the OS Giken Twin Plate TS2A clutch and Super Lock LSD installed. The following day, August 3, was a timed Solo Sprint session using transponders that I attached as well but unfortunately I have no video footage of the event.
Written by: Mark Lin

NASA GTS Class / Mid-Ohio Raceway  (Jul. 2009 issue)
07/11/09 Driver: Scott Berkowitz

Starting at the pole and amidst over 60 cars on the track simultaneously, Scott is able to take the overall win for GTS!

Maitland Importers Inc. TTC Mini Cooper Sebring raceway  (Jun. 2009 issue)
06/25/09 Driver: Ian Stewart / TTC OS Giken Mini captures class record at Sebring!

I took the Mini down to Sebring this weekend. It was an absolute OVEN. Played with shocks and tire pressure and got the car down to a 2:33.2 on Saturday, thus taking the win and the track record (previously 2:35.7). Last years TTC national Champion ran a 2:33.7 on a test day just before nationals. It was well over 105 degrees so the following morning when it was only in the high 90's I followed it up with a 2:32.1. That shatters the lap record and shatters last years national champs time which was set in cooler weather.

I couldn't be happier with the OS Super Lock LSD and STR1CD clutch package.
The car demonstrated zero on-throttle understeer coming out of the corners and provided excellent and predictable corner entry. Everyone at the event was extremely impressed with what our Mini could do. I am very impressed guys. I couldn't be running these lap times with out you!!!

Additional Video Comments:
(Car in front was the 2nd place car in its class - Turbo Miata which ran a 2:33.8)

Scion Racing Take NASA PTC Victory  (Jun. 2009 issue)
06/06/09 Driver: Dan Gardner / exterior video of the sprint race at Willow Springs

Scion tC Qualifying  (Jun. 2009 issue)
06/06/09 Driver: Scott Webb / in-car video taking pole position at Thunderhill

The OS Superlock-equipped Team Scion secures back-to-back wins! Dan Gardner and the Jackson-Dawson Communications team take the victory at the Willow Springs Performance Touring sprint race as well as class championship at the 3-hour WERC endurance race at Thunderhill. A wonderful testament to superior driver skill taking advantage of the best tools at his disposal, Dan Gardner piloted the tC during the sprint race, taking an early lead. The amazing part is that Dan was bumped off the track, wound up in last place, and fought his way back to the top to take the win by a 10-second margin! Even more amazing is that Team Scion finished the sprint, scrambled back to prep the tC for the endurance race, and then hit Thunderhill for another win in their class (E1), with a 6th place overall finish. Of course, the OS Superlock did its duty to apply power effectively to the tarmac reliably throughout both races!
Congrats to Dan and the J-D / Team Scion crew!!!

2009 San Diego National Tour  (May. 2009 issue)
5/14/09 Bill Schenker / MiataRoadster

OS Giken Super Lock LSD

Lincoln Pro 2009  (May. 2009 issue)
5/14/09 Bill Schenker / MiataRoadster, OS Giken / ChaseCam

Before, I always felt that I couldn't put down power coming out of corners; I could hear the engine rev up, but the car just wasn't accelerating. Now with the OS Giken, it feels like I can put down two black rubber lines! After installing the OS Giken I was actually getting power on oversteer coming out of corners; I was so used to having to mash down on the gas pedal to get going. But once I got out of that bad habit, the car feels now very controllable. I like to do a lot of throttle steering, and with the OS Giken I have one more valuable tool to go as fast as possible.
I've never used anything other than an OEM Torsen, but I understand that other clutch type diffs can give you push going into a turn (I hate push!) but I feel no push from the OS Giken. The OS Giken has transformed how my car delivers its power to the ground and I truly believe that I now have a big advantage over my competitors that don't have one.

OGK goes under 2:00 at Buttonwillow  (May. 2009 issue)
4/19/09 Emilio Cervantes / 949Racing

I tested the diff for the first time at the super tight and bumpy Streets of Willow course and the difference was immediately noticeable. I have driven every differential available for the Miata including my own custom built FC RX7 clutch type so I have a lot to compare to. Honestly, I was skeptical and wasn't expecting that much improvement with the OS Giken Super Lock but it blew me away at how much sooner I could jump on full throttle right after turning in even if the tires were cold. The car would just hunker down, rotate a bit to take a set and accelerate. No drama.

In this video of the record lap at Buttonwillow, I'm at full throttle immediately after turning in and stay there even though I'm putting a tire in the dirt, hitting the turn exit curbing, making little steering input mistakes.. and it doesn't matter. The car just stays hooked up and accelerating without going sideways. In the slow off camber and rising "Offramp" turn (T2) I hit full throttle right after braking and you don't hear any wheelspin where I used to fight wheelspin all the way to track out 100 ft later. In the long 4th gear right hand decreasing radius "Sweeper" I breathe the throttle slightly to tuck in the nose the smoothly go back to full throttle while exiting over the curb and it was as easy and smooth as driving a video game. Again, no drama.

You can't even hear the engine note fluctuate there it was so smooth. To me that's the ultimate test of a diff, being able to throttle steer on the limit without wasting a drop of available traction from the tires. Turning into "Sunrise" and "Bus Stop" you can hear throttle adjustments on entry to rotate the car into the turn quickly and precisely and it still rotates freely like an open diff, not pushing like every other clutch type I've tried. When I suddenly get back on throttle at the apex, there is no sudden jerk or tail kicking out, just smooth controllable weight transfer.

I think that's the MAGIC of the Lock Timing Control System (LTCS). Overall for me, the OS Giken Super Lock sets a new paradigm for every aspect of what a I expect from a differential; smooth as butter, hooks up like locked diff, no understeer on entry and is utterly bombproof. Knowing what I know now, I'd pay twice as much for it.
It's the real deal!

One Lap Of America Sebring Porsche 911 GT2  (May. 2009 issue)
5/05/09 Peter Lier / Ian Stewart, OS Giken Superlock LSD equipped!

Here is footage of Peter and Ian taking 2 easy wins at Sebring International Raceway, clocking times at 2:18.07. This is amazingly fast for a 3400lb Porsche with street tires! These seasoned drivers are battling at a multitude of race tracks with a field of Vipers, GT-R's, Corvettes, etc. for the championship of the "One Lap of America" series. Based on the cross-country "Cannonball" series which became popular in the 1970's, it has evolved to a competition where drivers compete at a racetrack, then drive the same car to the next event, race again, and then repeat the process for 9 days! Needless to say, the series is a testament to the durability of the components they use for competition. When it comes to the differential, there is no doubt that it will be the last thing Peter and Ian will need to worry about failing, and will provide the most efficient, consistent, and reliable power transmission to the wheels!

TTC Homestead Mini Cooper S  (Apr. 2009 issue)
4/18/09 Maitland Importers Inc. , OS Giken, RMW , Mini Cooper S at Homestead

Here is a video of Ian Stewart driving the Maitland Importers, Inc. Mini at Homestead Raceway in Florida. On this day he was running at the same time with about 15+ other Mini's (different group) and was faster than the fastest Mini from the other group by a margin of over 15 seconds! In his own class he took the championship, beating out a host of 350z's by more than 2 seconds! After watching this video, take a look at videos of other Mini's running on the same track. You will notice a vast difference in on-throttle timing during corner exit. With the OS Superlock, understeer is virtually eliminated, allowing for much higher corner exit speeds and resulting in reduced lap times. Special thanks for the video and congrats to Ian and Maitland Importers, Inc. for such a dominating victory at the event!

Grassroots Motorsports L.S.D. Evaluation   (Feb. 2009 issue)
What's the Diff ?

Three differencial approaches, three different answers.