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Motor Sport Parts
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
Note
Longer ring gear bolts may be required
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
Albins Performance Transmissions Porsche 915 6-Speed Sequential Gearbox – Motorsport-Grade Drivetrain Upgrade
The Albins Performance Transmissions A17-915 6-speed sequential gearbox is a purpose-built motorsport transmission developed as a high-performance replacement for the standard Porsche 915 unit. Designed for off-road and competition use, this gearbox delivers dramatically faster shifts, increased strength and superior reliability—without requiring structural modifications to the vehicle.
Fits:
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
The A17-915 retains the original mounting architecture and
connection points for cable-operated clutch and throttle linkages, allowing it
to integrate cleanly into many Porsche 915-equipped platforms. While fitment
may vary between production vehicles, the design philosophy prioritises
compatibility alongside race-level performance.
The A17-915 is engineered to handle torque outputs of up to 600Nm, making it suitable for high-performance and competition applications. Lubrication and cooling are managed through the transmission oil, which is continuously circulated by an integrated internal oil pump.
Oil is directed from the pump to an external cooler before returning to the transmission via the inlet port. From there, it is distributed through a network of purpose-designed internal oil galleries, ensuring consistent lubrication and temperature control across all critical components.
All bearings used within the transmission are roller or ball types, minimising friction while simplifying long-term servicing. The gearbox features a conventional two-bearing shaft layout, combined with an unconventional reverse gear placement. This innovative configuration allows for an exceptionally compact gearset, increasing overall rigidity and strength.
Strategically positioned inspection ports within the transmission housing allow rapid visual checks of gears and dog rings without requiring full disassembly—ideal for motorsport maintenance schedules.
The gears and shafts are heat treated, precision gear-profile ground, shot peened and isotropically polished as standard, ensuring tight tolerances, enhanced durability and smooth operation. The limited-slip differential is a plate-style unit, available with multiple ramp angle options to suit different driving and competition requirements.
Both gear selection travel limits and reverse lock-out travel limits must be correctly set and observed to ensure smooth, reliable and repeatable operation.
Use of the Albins A17 sequential shifter mechanism is strongly recommended, as it has been specifically engineered to operate in conjunction with the A17-915 transmission. If an alternative shifter is employed, it is essential that the gear lever is equipped with positive travel stops. While the A17-915 features internal travel limiters, external stops at the gear lever help prevent excessive movement that could overload the selector rod and related drivetrain components.
Prior to use, the clearance between the release bearing and clutch diaphragm fingers should be verified in accordance with the clutch manufacturer’s specifications. Additionally, a clutch pedal stop must be installed to prevent over-travel of the clutch spring, reducing wear and protecting the clutch assembly.
What the Albins 915 Sequential Gearbox Does
This advanced transmission:
- Converts traditional H-pattern shifting to a sequential shift pattern
- Provides 6 forward gears plus constant-mesh reverse
- Delivers ultra-fast, positive gear engagement
- Improves shift consistency under load
- Enhances drivetrain durability for high-power applications
- Supports lever or paddle-shift actuation
Thanks to the Albins selector barrel profile, shifts are exceptionally smooth and precise—even during aggressive driving or competition use.
Technical Highlights
- Sequential
shift pattern – rapid upshifts and downshifts
- 6 forward gears + constant-mesh reverse
- Mechanical
reverse lockout when using shift lever
- Reverse
lockout removable when paired with paddle-shift systems
- 6-dog
gear engagement design for strength and durability
- Unique
Albins selector barrel for smooth gear transitions
- Requires replacement of the original shifter mechanism
This gearbox is engineered for drivers who demand absolute control and speed.
Why Upgrade to a Sequential 915 Gearbox
Upgrading to the Albins 6-speed sequential transmission
delivers:
- Faster
shift times compared to H-pattern gearboxes
- Reduced
risk of missed shifts during hard driving
- Improved power delivery and acceleration
- Greater durability under high torque loads
- Enhanced driver confidence in competitive environments
- Motorsport-proven reliability and engineering
For track, rally, hill climb or dedicated race builds, a sequential gearbox is a transformative upgrade.
Important Notes
Intended
for motorsport and off-road use
Original
shifter mechanism must be replaced due to sequential operation
Fitment
compatibility may vary across production vehicles
Paddle-shift
compatibility allows removal of reverse lockout
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
A17915
The product you are viewing cross references to these numbers
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- 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 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
** This requires machining to the front "nose cone" housing.
We have updated our 915 spray bar kit to include an improved oil return port that will not interfere with the torsion bar tube and allows for better routing of the oil return line.
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
Albins Performance Transmissions Active Gear Knob for Porsche 915 6-Speed Sequential Gearbox
The Albins active gear knob is a motorsport-grade control component designed specifically for use with the Albins Porsche 915 6-speed sequential gearbox. Engineered to integrate seamlessly with vehicle electronics, this active gear knob provides accurate upshift and downshift signals to the ECU, enabling advanced features such as gear-cut ignition control and automatic throttle blipping.
Fits:
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
By converting driver input force into a precise analogue voltage signal, the active gear knob ensures consistent, repeatable shift information—critical for high-performance and competition environments where timing and reliability matter most.
What the Albins Active Gear Knob Does
This advanced gear knob:
- Sends
upshift and downshift signals directly to the vehicle ECU
- Enables ignition cut and throttle blip functionality
- Outputs an analogue signal proportional to applied shift load
- Improves shift accuracy and repeatability
- Enhances drivetrain protection during aggressive shifting
- Supports modern motorsport ECU strategies
It transforms the mechanical action of sequential shifting into a fully integrated electronic control input.
Technical Features &
Design Benefits
- Analogue
voltage output proportional to driver input force
- Industry-standard
mounting system for compatibility and ease of installation
- Indexed
alignment markings to correctly orient the knob with force direction
- Designed for sequential shift applications
- Optimised for motorsport ECU integration
These features ensure precise signal transmission and consistent performance in demanding conditions.
Why Upgrade to an Active Gear Knob
Upgrading to the Albins active gear knob delivers:
- Faster,
cleaner gear changes through ECU-controlled ignition cut
- Smoother
downshifts with automatic throttle blip support
- Reduced drivetrain shock and component wear
- Improved driver confidence under race conditions
- Professional-level shift control used in competitive motorsport
It is a key upgrade for anyone running a sequential gearbox who wants maximum performance and control.
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
Bearing retaining plate for 915 transmissions
Fits:
Porsche 911 '72-'86 (Not for 4-speed gearboxes)
- Precision machined
- Better support for both the main and pinion shaft bearings
- Improved design incorporates an oil groove promoting more lubrication to the input shaft bearings
- Substantial clearances for ease of assembly
- Perfect fit for bearings and assembly
- Much stronger than the original cast two piece design
Replaces parts 915 302 121 03 and 915 302 123 03
Notes:
Do not use the factory lock washers.
For use only with the 4mm flange 4 point pinion bearing 999.052.030.00
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91530212303
The product you are viewing cross references to these numbers
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- 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)
- Porsche 914 (1970-1976)
Our custom "coarse spline/18 spline" drive flanges will allow 930 or G50 CV joints (with metal grease caps) to bolt up to the early 1969-75 911s and all 914 transaxles.
Shaft length was designed with the stock open diff in mind. If by off-chance you have a factory LSD, spacers will be required.
Sold in pairs.
Fits
Porsche 911 - 1969 to 1975
Porsche 914
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
CMS.914.18T
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)
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 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
Our design features a replaceable steel threaded insert for the bolt in the event the threads should ever strip.
Fits all Porsche 915 transaxles 72-86
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91530311301
The product you are viewing cross references to these numbers
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
Precision machined from T6 aluminum
Superior in strength as compared to all OEM side plates
Uses larger 930 Turbo differential taper bearing (999.059.064.00 sold separately)
Oil passageway for additional lubrication to the diff bearing
Perfect fit/no clearance issues
Adds strength and reliability to the diff section by reducing ring gear deflection
Perfect for racing and V8 applications
Fits all 915 transmissions '72-'86 excluding Euro models with oil cooler
Replaces parts 915.301.311.00, 915.301.311.04, 915.301.311.05, 915.302.311.06
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91530131105
The product you are viewing cross references to these numbers
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
Includes clutch arm, cable clevis, slave cylinder, spacer, seals and our billet slave cylinder bracket with bolts. This requires the use of the 1978 and earlier clutch fork pivot shaft.
Note: This requires a portion of the rib on the bottom of the transmission that holds the original clutch cable to be cut away on 72-77 models. To go back to a cable configuration if one so chooses can be done with a bolt on bracket.
A 3/4" clutch master cylinder is recommended - not included.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95011623712
The product you are viewing cross references to these numbers
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- 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 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
Features:
Proper knock off tabs/pry points for easy removal
300F VDO temp sender included
-8AN oil scavenge port (-8AN adapter included)
Uses your existing fork, studs and dowel pins
Uses stock paper gasket
Fits all Porsche 915 and 930 transmissions.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91530302302
The product you are viewing cross references to these numbers
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- 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 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
Machined from 6061 T6 aluminium; features a replaceable threaded insert for the supplied bolt.
Fits all Porsche 915 transaxles 72-86 and 930 4 speed transaxles 76-88.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91530311100
The product you are viewing cross references to these numbers
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- 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 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
Replacing factory part numbers 915.302.112.00 and 930.303.112.02 our part is made in house from 6061 T6 aluminum - and incorporates replaceable grade 10 hardware in the event the threads should strip.
Fits all 915 transmissions '72-'86 and all 930 transmissions '76-'88.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91530211200
The product you are viewing cross references to these numbers
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
Fits:
Porsche 911 F (1972 to 1973) and
Porsche 911 G (1974 to 1986) that are equipped with a 915 transmission (excluding Turbo)
Diagram ref no 22
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91530311301
The product you are viewing cross references to these numbers
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- 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 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
The update is a also good repair for those whom have loose, damaged or worn out guide tubes.
** This requires machining to fit
The original is machined off and a custom steel tube is fitted. It's further retained from the inside of the diff case with a high quality snap ring and sealed with the factory o-ring.
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