Transmission race parts for 101/750 Alfa Romeo

Alfaholics GTA/TZ Close Ratio Gear Kit - REM Superfinished

Alfaholics GTA/TZ Close Ratio Gear Kit – REM Superfinished

£3,750.00 GBP (ex vat)


As per above kit but put through a final REM Superfinish process. This process polishes the surfaces of the components at a particle level resulting in a super smooth chrome appearance finish. This finish results in the oil getting worked less hard inside the box resulting in reduced frictional losses – the result of this is a nett gain of BHP at the rear wheels.

Alfaholics 0.82 5th Gear Set – For GTA Close Ratio Gear Kit

Alfaholics 0.82 5th Gear Set – For GTA Close Ratio Gear Kit

£1,095.00 GBP (ex vat)


Alternative option 5th gear set with a longer gearing than the standard GTA 0.86 ratio. Ideal for fitment with higher power fast road cars using our close ratio gear kit or for optimising 5th gear rpm for FIA racing GTAs, especially useful for optimising gearing for the Masters Historic Racing 8,200rpm regulated rev limit.

Alfaholics Quick Shift Kit

Alfaholics Quick Shift Kit

£640.00 GBP (ex vat)


We have designed and developed this quick shift gear change kit to speed up the actuation ratio of the gear lever and thus improve gearshift times. Rather than manufacture an unsightly remote style gear lever which makes cars look heavily modified, we have CNC machined from billet a new set of gear linkage operating components to fit your gearbox so that the shifter rods themselves are moved at an increased rate for a given movement of the factory style gear lever. This means that your interior keeps its original appearance and the classic renowned Alfa gear lever is retained. We have designed the gear lever stub with a specific 2 degree offset for the gear lever angle to position it slightly towards the driver, the part is reversible so that in 1 orientation it is aligned for LHD and when spun around 180 degrees it aligns for RHD cars. This new system is far superior to the elongated adjustable angle that Alfa used, as that allowed the gear lever to work loose and rotate on its own under heavy use making the car undrivable. We have also uprated the pinch bolt to M8 sizing to ensure a firm and positive tightening.

Also included in the kit is a lightweight CNC machined aluminium gear lever with an extended length and modified angle to use in track and competition cars where often the seating position is moved rearward and with an extended steering column for optimised seating position. This gear lever repositions the gear knob near the steering wheel for improved driving ergonomics. The gear lever is also designed to Autodelta GTA specification with a solid un-bushed base to remove lost motion and further improve shift times. Whilst this longer solid gear lever significantly improves the ergonomics and operation for competition cars, it can cause a slight buzzing noise at motorway cruising speeds on the road so for road cars with a more standard seating position, we recommend staying with the standard factory gear lever. This kit needs to be installed by a competent professional who understands the workings of an Alfa gearbox but can be done in situ in the car without removing the gearbox from the car.

Alfaholics Premium Quality Gearbox Rebuild Kit

Alfaholics Premium Quality Gearbox Rebuild Kit

£1,335.00 – £1,450.00 GBP (ex vat)


Full set of components required to rebuild all moly-synchro type 105 series gearboxes. The kit comprises our ultimate quality Alfaholics synchro rings & Alfaholics sleeves as well as our best quality gearbox bearings, oil seal and heavy duty rear mount. Please specify if you need a layshaft front bearing of 20mm or 25mm internal diameter. Please note that the synchros are not compatible with the first series of mechanical gearboxes (1963-1966) which featured non-moly synchros.

Alfaholics Production Early to Late Gearbox Synchromesh Conversion Kit

Alfaholics Production Early to Late Gearbox Synchromesh Conversion Kit

£1,525.00 GBP (ex vat)


Full kit of parts to convert an early (101 & early 105) non-molybdenum synchromesh “yellow label” gearbox to later improved molybdenum coated synchros as per late “red label” gearboxes. Full set of all Alfaholics produced premium quality components, including synchro rings, synchro sleeves, brake straps, reference sectors and brake sectors for all 5 gears. A great upgrade when rebuilding any early gearbox with grooved synchos.

Alfaholics Rear Propshaft - Sprint

Alfaholics Rear Propshaft – Sprint

£450.00 GBP (ex vat)


Exclusively manufactured for Alfaholics to exacting tolerances.

Most rear propshafts have had many UJ changes in their life and as a result can often have damaged UJ housings, this means that even with new UJs vibrations can still occur due to end float in the UJ housings which is beyond shimming out.

The sliding joint is also another area for wear on an original unit that of course cannot ever be repaired. As a result of these 2 major factors we no longer use rebuilt rear propshafts in our workshop, fitting only our brand new unit for 100% perfect results at virtually no extra cost to the customer.

We manufacture these units from race quality thin wall 2” tube, not only does this mean that the tube is stiffer which results in far smoother running at high speeds, but it is also much lighter than an original unit. We have also increased the size of the UJs on each end which makes them much less prone to wear and much more able to handle the load from engines with increased performance.

Each prop is dynamically balanced to 8,000rpm meaning that this item is perfect for use on both road and competition cars.

Crownwheel & Pinion Sets

Crownwheel & Pinion Sets

£995.00 GBP (ex vat)


New premium quality Alfaholics production, manufactured in the UK to the very highest quality and exacting tolerances. We have taken the opportunity to improve the tooth cut profile for increased strength over the original cut used by Alfa.

These crown wheel and pinion sets are available in the small 1300/1600/1750 size in 5.8, 5.3 & 4.3 ratios. Optimum performance can be achieved by fitting in conjunction with our Alfaholics Limited Slip Racing Differential.

The 5.3 & 5.8 ratios are for intended for circuit racing, whilst the 4.3 option is the optimum ratio for fast road and trackday cars. By using the small size axle, unsprung and rotational weight is kept to a minimum. An additional benefit for those people with fast road & trackday cars, is that you can use the existing axle from your GT Junior and simply fit this 4.3 ratio with LSD, rather than trying to find what are now very rare Berlina 4.3 rear axles.

We can also manufacture to order any desired ratio (in addition to those above) within 3 weeks.