California Motorsports - Porsche Boxster 986 transmission section

Help put your power to the ground more effectively and add stability with a limited slip. This is an improvement for a street car and a must for track car.

· 12 plate design

· High grade billet steel housing

· 1.5 way asymmetrical ramps or 2 way symmetrical ramps available, allowing for 12 possible internal settings total

· Treated steel plates allow for smooth and quiet operation

· Fits all 986 Boxster 5 speed transmissions 97-99; retrofit for 00-04

Rebuild parts and services are also available.

EXPLODED VIEW

$1695

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KAAZ BOXSTER S 986 LIMITED SLIP DIFFERENTIALS

Help put your power to the ground more effectively and add stability with a limited slip. This is an improvement for a street car and a must for track car.

· 12 plate design

· High grade billet steel housing

· 1.5 way asymmetrical ramps or 2 way symmetrical ramps available, allowing for 12 possible internal settings total

· Treated steel plates allow for smooth and quiet operation

Rebuild parts and services are also available.

EXPLODED VIEW

$1695

Note: In order to use an LSD in a Boxster S transmission that originally came without, your existing axle flanges will need to be machined or replaced with ones that use BOLTS.

ALBINS BOXSTER S 986 SHORT/CLOSE RATIO GEAR KIT

Stock gear ratios are designed for drivability and fuel economy and not necessarily for best performance. Whether you have a stock motor or one that has been tuned your transmissions’ gear ratios may not be optimum for your driving needs. Optimizing your gears to match your engines’ power curves can make a huge difference on the track, often resulting in reduced lap times, and can give the sensation that there has been a gain in power. Alternative gear ratios can make the car more fun to drive or be more drivable.

We offer a short/close ratio gear kit that replaces the stock 3^rd-6^th gears greatly reducing the RPM drops from 2^nd to 6^th allowing you to better stay on the cam.

Short/close ratio gear kit consisting of 3^rd-6^th gear sets and conversion steel cage bearing assembly $3875

· 3^rd gear 1.783 (stock 1.516)

· 4^th gear 1.455 (stock 1.216)

· 5^th gear 1.20 (stock 1.024)

· 6^th gear 1.00 (stock 0.841)

Boxster S with short 3^rd-6th gears

ALBINS BOXSTER S 986 RING AND PINIONS

The overall gearing in your transaxle can be reduced or increased with alternative ratio final drive gears.

We offer OEM replacement sets as well as Albins made sets-and in ratios that the factory never produced. These high quality hypoid gear sets are produced on the same cutting equipment and with the same design as OEM.

Ratios currently available are:

· 3.00/10:30 (special ratio for V8 and turbo applications, approx 15% taller than stock gears) $3425

· 3.44/9:31 (stock ratio) $ inquire (new and used available)

· 4.00/8:32 (improved street/autocross/track ratio, approx 14% shorter than stock gears) $3425

Boxster S with 4.00 final drive

Boxster S with 3.00 final drive

Break in recommendations

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CMS BOXSTER S 986 REBUILD PARTS, KITS AND SERVICE

We offer complete rebuilding services, rebuilt gearboxes as well as maintain an inventory of Genuine Porsche parts to remedy just about any problem that should arise in your 996 transmission.

Is your 2^nd gear giving you trouble? Is it not engaging smoothly or popping out? Do your bearings make noise? We understand the nature of the most commonly reported problems in these transmissions and know how to fix them.

2^nd gear repair kit - $1364

· 2^nd gear

· 2^nd gear shift sleeve

· 2^nd gear synchronizer ring assembly

Synchro kit - $1158

· 1^st-6^th gear synchronizer rings

Bearing kit - $944

· Left side diff bearing

· Right side diff bearing

· Genuine Porsche pinion shaft main bearing

· Genuine Porsche input shaft main bearing

CMS BOXSTER S 986 SHIFT ARRESTER

If you are unfortunate enough to experience the dreaded 2^nd gear pop out, DON’T GRIND YOUR TEETH!

After extensive testing and development we are proud to announce a new component related to the internal shift mechanism that promotes far better and more reliable engagement to 2^nd gear with a newly designed profile.

This will allow for a more proper engagement of the synchro teeth and will not result in any unwanted changes to other critical settings unlike backyard “modifications” do.

Precision machined from 4130 Chromoly steel.

$199

Installation instructions

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CMS BOXSTER S 986 INTERNAL OILING SYSTEM

The internal components of your Carrera or Boxster S gearbox can be better lubricated, especially on the input shaft where parts are farthest away from the oil. Under certain conditions the transaxle may experience oil starvation, a contributing factor for overheating often resulting in costly damage or failure.

CMS now offers “prepared” input shafts and bearing races with oil passageways to 3^rd through 6^th gear bearing journals, similar to Turbo, GT2 and GT3 transmissions.

It will be necessary that oil out (suction) and in (return) ports are fitted to the appropriate locations on the transmission case and requires an external remote electric pump to be installed-preferably with a cooler and filter.

The benefits to doing all this are tremendous and will promote lubrication, cooling and thus longevity.

Parts are available exchange and outright, used and new. Contact us for further information and pricing.

CMS billet thrust washer

CMS BOXSTER S 986 BILLET 3^RD/6^TH GEAR MAIN SHAFT THRUST WASHER

It’s not uncommon for the original thrust washer to fail causing serious damage inside your transmission. We now offer a stronger billet thrust washer; one that actually promotes lubrication to 3^rd and 6^th gear needle cage bearings.

$120