Motor Sport Parts

This 2mm spacer ring allows for a much easier setup when retrofitting some differentials and or crown wheel and pinions within the 915 family.

Note
Longer ring gear bolts may be required

Our spray bar, made from stainless steel, is an excellent reproduction of the factory RSR spray bar. It allows for gear lube (presumably from a remote pump and cooler) to be returned directly to the gear mesh, including the final drive gears.

** 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.

Fits all Porsche 901/911/912 aluminum case transmissions.

Precision machined from 4130 Chromoly
Better supports both 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 901.301.251.01 tensioning plate

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90130125101

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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

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91530212303

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Fits all Porsche 930 4 speed transmissions

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.

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93030212100

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Finally, conversion axle flanges for early 911s and 914s. These are machined in house from 4340 billet steel and heat treated.

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

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CMS.914.18T

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Machined in house from 4340 steel and heat treated.

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.

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93033223200

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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.



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

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9XXGFIX

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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.


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

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CMS.G50.TOBR

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Cover plate gearbox oil pump. 



Fits:
Porsche 911 2.7 RS / RSR Race car

For 915 race (5 speed) gearbox 

Click 'Zoom in' for large parts diagram.
This item replaces diagram ref no 10

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9153073032R

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Direct replacement for NLA Porsche part 915.303.113.01 our 5th/reverse shift fork is an excellent reproduction made in house from 6061 T6 billet aluminium.

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

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91530311301

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At last, a strengthened side plate for the early aluminium case 901 transmissions! Fits all vintage Porsche 911 and 912 short wheel base cars '65-'68 some early '69 models with "chilled casting".

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

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90130131101

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Allows you to scavenge oil from the side of a G50 5 or 6 speed transmission bell housing using the factory "blank" in the casting.
While some models are machined from the factory, some will need additional machine work. This is a great solution for a G50 car with low ground clearance that needs an oil cooler.

Machined in house from 6061 billet aluminum
Nicely beveled edges; high attention to detail
VDO 300F temp sender included
-8AN adapter included
Mounting hardware included
For all G50's '87-'98 except C4 5 speed
Not for inverted/mid engine gearboxes

G50/00, G50/01, G50/50, G50/03, G50/04, G50/05, G50/20, G50/21, G50/31, G50/32, G50/33, G64/51, G64/52

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95030137100

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Upgrading from the stock 915 side cover will add strength and reliability to your gearbox.

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

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91530131105

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Specifically made for the early G50 5 speed '87-'89 transmission our billet aluminum side cover replaces the thin cast cover that is prone to failure.
Ours is beautifully pocketed and even allows for use of the OEM speed sensor and bracket.
For use with the standard studs, o-ring, axle seal and differential bearing.

Fits G50/00, G50/01, G50/02

Replaces part 950.301.312.04

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95030131204

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Our billet aluminum differential side cover is much stronger than the factory magnesium counterpart and will help reduce gear deflection under load.

Our version uses the larger 930 turbo taper bearing and features a replaceable clutch cable bracket.

You must use differential bearing 999.059.064.00

You can use the stock studs, axle seal, o-ring and factory preload setting.

Fits Porsche 911 70-71 side cover with clutch cable bracket for pull clutch

Replaces part: 901.301.311.12

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90130131112

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The original Porsche 930 transmission differential side cover is made of cast aluminum, not to mention it's pretty thin.
Under load there can be a tremendous force applied to this cover, and it can break, sometimes resulting in a damaged ring and pinion-or worse.
Upgrading to a billet side plate will add significant strength and increased reliability to the differential section.

Our design features include:

A ring gear thrust bolt to reduce ring gear deflection under load
Ports that can be used for an oil cooling system
Cross drilled oil passageways for the differential bearing

Comes with (3) 3/4 - 16 O ring plugs.

Replaces part 930.301.311.02

930/30, 930/33, 930/34, 930/36, 930/37, 930/67

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93030131102

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We can provide bolt on hydraulic slave cylinder for your Porsche 911 915 transaxle eliminating all the woes that come with a clutch cable. It can be used for both upright and inverted applications - especially nice for mid engine conversions.

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.

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95011623712

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We can provide bolt on hydraulic slave cylinder for your Porsche 911 930 4 speed transaxle eliminating all the woes that come with a clutch cable. It can be used for both upright and inverted applications - especially nice for mid engine conversions.

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.

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95011623714

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Replacing part for 911.301.221.00 (no longer available). Made in house from billet 6061 to correct tolerances.

Genuine Porsche bearings are recommended

Fits 911/912 64-69.5 aluminium case 901 transmissions.

90130122100, 901-301-221-00

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90130122100

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Our billet fork cover plate replaces part 915.303.023.02 and will allow you to scavenge oil without having to drill, tap or weld to the case. Within the oil passageway is a temp sender provision that is usable even when not utilizing the scavenge port.

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.

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91530302302

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The weakest and most commonly broken shift fork in the G50 5 speed transaxle is the cast aluminium 1st/2nd shift fork.
Our newly designed fork is CNC machined beautifully from aircraft grade billet aluminium and offers the most strength over any fork in the aftermarket. Our fork will also promote enhanced lubrication to 2nd gear as it better captures the idler gear when engaged.

Fits all G50 5 speed Porsche transmissions '87-'94.
(G50/00, G50/01, G50/50, G50/03, G50/04, G50/05, G50/52, G64/00, G64/01)

Replaces part 95030311101

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95030311101

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A direct replacement for part 915.303.111.00 and 930.303.110.02.

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.

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91530311100

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If you are rebuilding a Porsche 915 or 930 transmission it's likely the 3rd/4th shift fork is worn out.

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.

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91530211200

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The factory cast aluminum 993 fork suffers from an inherent weakness in which the steel insert that the reverse lever actuates - is prone to failure.
The cast steel RS fork does not have this issue but it's not a billet steel one like ours...and it's less expensive.

Fits all G50 5 speed transmissions '87-'94 and all G50 6 speed transmissions '95-'98 including C4, RS, Turbo and RSR models.

(G50/00, G50/01, G50/50, G50/03, G50/04, G50/05, G50/52, G64/00, G64/01, G50/20, G50/21, G50/31, G50/31, G50/33, G64/51, G64/52)

Replaces part 950.303.113.04, 950.303.103.00, 950.303.113.04, 950.303.103.06

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95030311304

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Shift fork – reverse gear and fifth gear.



Fits:
Porsche 911 F (1972 to 1973) and
Porsche 911 G (1974 to 1986) that are equipped with a 915 transmission (excluding Turbo)

Click 'Zoom in' for large parts diagram.
Diagram ref no 22

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91530311301

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Tensioning plate.



Fits:
Porsche 924 1978-1979 Only for 5-speed transmission
Porsche 911 G Turbo 1975-88 Only for 4-speed transmission

Click 'Zoom in' for large parts diagram.
Diagram ref no 21

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93030212101

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This update will allow for use of the late style 915 main shaft seal and o-ring on early transmissions ('72-'75) where the seal installs from the inside and the guide tube is not removable.
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.