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Design 911 Design 911 supply Porsche parts, Porsche spares and Porsche accessories, to both retail and to the trade. Our Porsche product and accessory range includes brakes, exhausts, tyres, wheels and Porsche panels and interiors. https://www.design91.uk/images/schemaLogo.png https://www.design91.uk/images/schemaLogo.png +443456003478 https://www.design91.uk Facebook Instagram

Motor Sport Parts

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9XXGFIX
Product Information
Product Information
It's not uncommon for one or both bosses that capture the pivot shaft for clutch release fork to crack or break off rendering your clutch inoperable. This is a repair kit and will require some machine work and a strip and rebuild to professionally repair your bell housing for a fraction of what it costs to replace the housing or the entire transmission. 993 bell housings remain no longer available.

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.

rohler

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Related, superseded, cross reference or alternative numbers for comparison.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
95011608606
99711608690
CMS.G50.TOBR

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Special Offer
99630303300/1
Product Information
Product Information
Redesigned the factory shift arrester with a different profile to allow 2nd gear to engage all the way every time. This will help keep 2nd gear pop outs from occurring without shimming or machining of the gears or changing the detent roller - provided your 2nd gear synchro teeth and shift sleeve are in good condition.

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Related, superseded, cross reference or alternative numbers for comparison.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
996.303.033.00
99630303300

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99642416503/1
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Product Information
For most component car applications OEM cables won't work and custom cables are required. If you are building a car then the last thing you need is to add a bracket to your to do list. So we have done it for you!
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
99642416503
996.424.165.03
99642416503
99642416502

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99730311100/1
Product Information
Product Information
Direct replacements for Porsche 997.1 6 speed manual.
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
99730311100
99730311100

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99730311300/1
Product Information
Product Information
Direct replacements for Porsche 997.1 6 speed manual. 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.

99730311300
99730311300
99730311300

The product you are viewing cross references to these numbers
99730311500/1
Product Information
Product Information
Direct replacements for Porsche 997.1 6 speed manual. 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.

99730311500
99730311500
99730311500

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DISPLAYING 1 to 6 (of 6 products)
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About Motor Sport Parts

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

  • Motorsport-grade Porsche gearbox components.
  • Engineered for strength, precision, and endurance.
  • Ideal for road-to-track conversions or full competition use.
  • Designed for optimal oil flow, thermal stability, and torque handling.
  • Includes reinforced gears, shafts, bearings, and cooling components.
  • Proven reliability in motorsport and performance environments.       

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