CMS
We specialize in Porsche transmissions, manufacturing many components and upgrades.
CMS have served the Porsche community for over 35 years and continue to do so.

Our part is machined from 30,000 psi carbon steel and replaces factory part 996.302.121.9A.
Better and more light weight than the factory machined cast part.
Note: The pass through holes have been deleted to save weight.
Fits 996T, 997T2, 996 GT2, 997 GT2RS, 996 GT3, 997 GT3, 996 GT3 CUP
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9963021219A
The product you are viewing cross references to these numbers
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
- Porsche 997 TURBO 2007>>
- Porsche 997 GT3 2007>>
- Porsche 997 GT2 2007>>

G96/50/88/90/93/96 : G97/88/90/92
Proper rail to fork interference fit; maintains correct tolerances
Improved design reduces the chance of stripped threads
Use factory torque specs and our supplied hardware
Fits all 996T, 997 GT2 & GT3 including RS and synchromesh CUP
G96/50, G96/88, G96/90, G96/93, G96/96, G96/97, G97/88, G97/96
Replaces part 996.303.116.50
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99630311650
The product you are viewing cross references to these numbers
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
- Porsche 997 TURBO 2007>>
- Porsche 997 GT3 2007>>
- Porsche 997 GT2 2007>>

G96/50/88/90/93/96 : G97/88/90/92
Proper rail to fork interference fit
Clearance for oil pump drive gear
Perfect roll pin provision
Substantial surface area to shift sleeve
Maintains correct tolerances
Fits all 996T, 996 & 997 GT2 & GT3 street car. Does not fit CUP gearboxes.
G96/50, G96/88, G96/90, G96/93, G96/96, G96/97, G97/88, G97/96
Replaces part 996.303.113.51
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99630311351
The product you are viewing cross references to these numbers
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
- Porsche 997 TURBO 2007>>
- Porsche 997 GT3 2007>>
- Porsche 997 GT2 2007>>

The plastic pads are a known issue on factory forks and even more so for a race box.
Ours are designed without.
G97.01, G97.31
Part Numbers
99730311100/1 1st/2nd
99730311300/1 3rd/4th
99730311500/1 5th/6th
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99730311100
The product you are viewing cross references to these numbers
- Porsche 997 Carrera 2 3.6L 2005>>
- Porsche 997 Carrera 2S 3.8L 2005>>
- Porsche 997 Carrera 4 3.6L 2005>>
- Porsche 997 Carrera 4S 3.8L 2005>>

For use with 3 inch throw, 5/8 threaded cables. NOT compatible with OEM cables.
Fits 996, GT2 and GT3 transmissions.
G96/00, G96/01, G96/30, G96/31, G96/50, G96/88, G96/90, G96/96, G97/50, G97/88, G97/90
Replaces part 996.424.165.02
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99642416503
The product you are viewing cross references to these numbers
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
- Porsche 997 Carrera 2 3.6L 2005>>
- Porsche 997 Carrera 2S 3.8L 2005>>
- Porsche 997 Carrera 4 3.6L 2005>>
- Porsche 997 Carrera 4S 3.8L 2005>>
- Porsche 997 TURBO 2007>>
- Porsche 997 GT3 2007>>
- Porsche 997 GT2 2007>>

G96/30/50: G97/31
Our version is stronger and incorporates the ring gear thrust bolt to minimize deflection under load. To my knowledge the factory cover is not offered as a spare part.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99634901003
The product you are viewing cross references to these numbers
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05

Porsche 997 Turbo 1st and 2nd gen with G97.50 6 speed.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99730131250
The product you are viewing cross references to these numbers
- Porsche 997 TURBO 2007>>
- Porsche 997 MKII Turbo 2009>>

Uses stock 996T 10 x 50 x 1.50mm CV bolts and sold in pairs.
Replaces part 996-332-209-50
Fits
G96/01/31/50
G97/50/88/90/92
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99633220950
The product you are viewing cross references to these numbers
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
- Porsche 997 TURBO 2007>>
- Porsche 997 GT3 2007>>
- Porsche 997 GT2 2007>>

Perfect for street, race, higher horsepower and V8 applications-where the additional strength is really needed!
Precision machined from aircraft grade billet aluminum to exacting standards for perfect fit and function
Replaceable silicone bronze shift rail bushings
Lightest weight possible, only 4.25 lbs
Fits all Porsche 901/911 late '69-'71 and 914 '70-'76 magnesium case "die casting" transmissions.
Replaces part 911.301.221.00
Note:
1. If replacing the 4 point bearings it's recommend you use GENUINE PORSCHE only due to dimensional differences we have found between used original, "OEM" new and Genuine Porsche bearings.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91130122100
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 914 (1970-1976)

Precision machined from 4130 Chromoly
Better support for both the main and pinion shaft bearings
Improved design captures the main shaft bearing 45% more than OEM
Substantial clearance provided for even non-standard tall 1st gear ratios
Perfect fit for bearings and assembly
Much stronger than the original cast part
Replaces part 901.301.035.13
Note: Deletes shim underneath original retainer, 901.301.255.13 if applicable.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90130103513
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 914 (1970-1976)

Our design features a replaceable steel threaded insert for the bolt in the event the threads should ever strip.
Fits:
901 65-68
911 69-71
914 70-76
Sportomatic 925 74-83
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90130311101
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 914 (1970-1976)

Precision machined from aircraft grade billet aluminium to exacting standards for perfect fit and function
Oil passageway for standard taper roller bearing
Replaceable clutch cable bracket
Uses rubber o-ring instead of paper gasket (part 113.301.185a included)
Uses standard differential taper roller bearing 999.059.027.00
Note: The cover is thicker than the original and therefore requires longer studs to be installed. We include a new set.
Replaces part 901.301.311.01
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90130131101
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)

For all 930 4 speed applications and 1978 and later 915.
Spacers are required if you are using with a factory LSD.
Replaces part 930-332-209-12
Sold in pairs.
Notes:
Factory LSD applications will require spacers, otherwise the flanges will be too short.
Designed for use with metal CV gaskets, not paper.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
93033223200
The product you are viewing cross references to these numbers
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)

Replaces part 996.303.033.00
Fits all Porsche 996 C2/C4, Boxster S 986, 996T, 996 GT2, 996 GT3, 997T, 997 GT2, 997 GT3 997, GT3 RS transmissions.
G86/20, G96/00, G96/01, G96/30, G96/31, G96/50, G96/88, G96/90, G96/93, G96/96, G96/97, G97/88, G97/96
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99630303300
The product you are viewing cross references to these numbers
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
- Porsche 997 Carrera 2 3.6L 2005>>
- Porsche 997 Carrera 2S 3.8L 2005>>
- Porsche 997 Carrera 4 3.6L 2005>>
- Porsche 997 Carrera 4S 3.8L 2005>>
- Porsche 997 TURBO 2007>>
- Porsche 997 GT3 2007>>
- Porsche 997 GT2 2007>>

Includes clutch arm, cable clevis, slave cylinder and our billet slave cylinder bracket with bolts. Please specify if your application is using a short bell housing or long bell housing transaxle as the pivot shafts for the release fork are different. We must modify the arm if you have a long bell housing transmission.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95011623714
The product you are viewing cross references to these numbers
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)

Precision machined
Improved design incorporates an oil groove promoting more lubrication to the input shaft bearings (some modification required to bell housing and shims)
Substantial clearances for ease of assembly
Perfect fit for bearings and assembly
Much stronger than the original cast part
Replaces part 930.302.121.00
Note: Do not use the factory lock washers in conjunction with our supplied hardware.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
93030212100
The product you are viewing cross references to these numbers
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)