901 / 904 / 906
Final drive 7:31, uprated
Porsche 901/904/906 final drive, uprated version, ratio 7:31, top quality.
Final drives & complete gearboxes
Porsche Final Drives from stock.
In stock. Ships immediately.
Ready-to-install complete gearboxes, reproduction clutch-type limited-slip differentials, homologated gear pairs with the Nürburgring ratio and final drives for nine gearbox types — all finished on the shelf.
Complete & ready to install
904 Complete gearbox, ready to install
Carrera GTS gearbox with slip-fit 2nd gear — fully built, set up, test-bench run.
906 Complete gearbox, ready to installCarrera 6 gearbox — fully built, set up, test-bench run, with spare-parts backup.
356 Complete package 110–150 hpComplete package for the Porsche 356 gearbox at 110–150 hp: steel differential with 12-hole mounting, 7:31 final drive, uprated axle shafts, tall 4th gear.
Assemblies in stock
Limited-Slip Diffs as Repro
Clutch-type limited-slip differentials like the Porsche original, in stock – for the 901, 904, 906, 907, 908, 910, 911, 912, 914, 915 and 917.
Homologated Gear Pairs
Homologated gear pairs for Porsche 901, 904, 906 and 908 in stock – including the Nürburgring ratio. Ready for immediate delivery, made in-house.
930 & 935 Differential
Limited-slip differential and axle flanges in stock — the two parts we carry for the 930 and 935.
Final drives in stock
356 Ratio 7:31, crown wheel with 12-hole mounting — for road and classic use. 901 Final drive for the first 911 gearbox, matched to our homologated gear pairs. 904 For the Carrera GTS — also available as a complete, ready-to-install gearbox. 906 For the Carrera 6 — also available as a complete, ready-to-install gearbox. 908 Works-racer final drive, combinable with gear pairs including the Nürburgring ratio. 908/03 For the hillclimb spyder version of the 908 — made in our current production run, in stock. 915 The well-known 8:35 (i = 4.375) from the 911 RS and RSR, reference 915 302 911 02. 916 For the uprated 916 gearbox — teeth ground rather than lapped. 917 Final drive for the Le Mans works racer, machined to original specification.
Parts catalogue
Newly made. In stock.
Everything shown here is made in-house — for the 904, 906, 901, 356 and 915. The full catalogue lists all 43 parts.
915
Motorsport final drive 8:35
Porsche Motorsport final drive 8:35 in top quality, replacing the 7:31 whose tooth spread at the pinion head is unfavourable and damaged on almost every second gearbox.
356
Final drive 7:31, uprated, 12-bolt
356 final drive 7:31, uprated version with 12-bolt mounting.
904 / 906
Homologated gear sets
Homologated gear sets for the 904 and 906 in Nürburgring or standard ratios.
904 / 906
ZF clutch-type LSD, uprated
Porsche 904/906 ZF clutch-type limited-slip differential, uprated version with Nadella flanges.
915
ZF clutch-type LSD with oil pump drive, 915/72
Porsche ZF clutch-type LSD with oil pump drive and Turbo stub axles for the Porsche 915/72 gearbox with oil cooler coil. No longer available from Porsche for a long time.
Inquiry
What is on your bench?
Gearbox type and a few lines about your request — that is all we need for a first assessment. A photo helps but is not required. The answer comes from the machinist, not from sales.
Send inquiry
Reply usually within 24 hours — from the managing director himself, no ticket system, no call centre. We call back on request.
or directly: 06628 9159093 · info@antriebstechnik-schmidt.de