Motor Sport Parts
Our current version uses hardware to reattach the new bosses rather than welding making future replacement much easier. This is the cleanest repair in the industry.
Uses the current version pivot shaft and fork assembly.

For all G50, G64, 993, 996T/997T, 996/997 GT2/GT3 transmissions.
G50, G50/00, G50/01, G50/50, G50/03, G50/04, G50/05, G50/52, G64/00, G64/01, G50/20, G50/21, G50/31, G50/32, G50/33, G64/51, G64/52, G96/50, G96/88, G96/90, G96/92, G96/96, G96/97, G95/50, G97/88, G97/96
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9XXGFIX
The product you are viewing cross references to these numbers
- Porsche 911 1987-1989 3.2L G50
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97
- 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 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MK1 GT3 2007-09
- Porsche 997 MK1 GT2 2007-09
- Porsche 997 MKII Carrera C2 3.6L 2009-12
- Porsche 997 MKII Carrera C4 3.6L 2009-12
- Porsche 997 MKII Carrera C2S 3.8L 2009-12
- Porsche 997 MKII Carrera C4S 3.8L 2009-12
- Porsche 997 MKII GT3 2010-11
- Porsche 997 MKII Turbo 2010-13
- Porsche 997 MKII GT2 RS 2011-13
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Related, superseded, cross reference or alternative numbers for comparison.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 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MK1 GT3 2007-09
- Porsche 997 MK1 GT2 2007-09
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 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MK1 GT3 2007-09
- Porsche 997 MK1 GT2 2007-09
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 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
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.
99730311300
The product you are viewing cross references to these numbers
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
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.
99730311500
The product you are viewing cross references to these numbers
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
Porsche Gearbox Motorsport Parts | Precision Components for Track-Ready Performance
Motorsport gearbox parts are engineered to deliver the precision, strength, and durability demanded by high-performance and racing environments. Designed to withstand extreme torque, heat, and rapid gear changes, these components optimise power delivery and shifting accuracy under competition conditions.
At Design911, we supply race-proven gearbox motorsport parts that meet or exceed high-performance engineering standards. Our range includes upgraded gears, bearings, selector forks, differential components, cooling systems, and reinforced casings — all precision-machined for endurance, reliability, and efficiency.
Whether you’re preparing your Porsche for competitive motorsport, endurance racing, or high-performance track use, our gearbox motorsport components provide superior response, strength, and reliability lap after lap.
What Do Motorsport Gearbox Parts Do?
Motorsport gearbox components enhance the transmission’s ability to handle increased power and aggressive driving while maintaining smooth, rapid gear engagement.
Core Functions:
- Strengthen the drivetrain for high-torque and high-RPM use.
- Improve gear shift speed, precision, and durability.
- Optimise cooling and oil flow for prolonged performance.
- Reduce friction and heat build-up under extreme load.
- Provide improved reliability in racing and endurance conditions.
These upgrades are essential for performance-tuned Porsches that experience higher stresses than standard road use can withstand.
Why Do Standard Gearbox Components Fail in Motorsport Conditions?
Under high stress, standard gearbox parts can quickly reach their performance limits. Motorsport use exposes them to extreme conditions that accelerate wear and mechanical fatigue.
Common Causes of Failure Include:
- Excessive heat from extended high-RPM driving.
- Gear tooth wear or chipping under racing torque loads.
- Oil starvation during hard cornering or acceleration.
- Bearing fatigue due to extreme lateral and axial forces.
- Deformation or cracking of casings from repeated stress cycles.
When standard parts are pushed beyond their design limits, they can cause shifting issues, noise, leaks, or even catastrophic gearbox failure.
Why Replace or Upgrade to Motorsport Gearbox Parts?
Upgrading to motorsport-grade gearbox components enhances performance, durability, and responsiveness — ensuring your Porsche performs flawlessly in competitive conditions.
Key Benefits:
- Superior strength for high-power applications.
- Enhanced cooling and lubrication for sustained performance.
- Faster, smoother, and more precise shifting under load.
- Increased longevity and reliability in race conditions.
- Available for Porsche 911, Cayman, Boxster, GT3, and Cup models.
- Perfect for performance builds, track conversions, and endurance racing.
Motorsport gearbox parts are not only replacements — they
are precision upgrades that deliver consistent, race-winning reliability and
performance.
Highlights