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Gear wheels for building a racing gearbox

Porsche 906 Gearbox Rebuild

Rebuild of the racing gearbox, parts from sample or drawing, race preparation

The Carrera 6 belongs on the track — and its gearbox in hands that take historic racing machinery seriously. We rebuild the 906 gearbox and remanufacture parts that only exist as samples.

What we do on the 906 gearbox

  • Racing gearbox rebuild
    stripping, measuring, reconditioning — with racing in mind: inspected gear teeth, correctly set bearing friction torque, test-bench run.
  • Parts from sample or drawing
    whatever is missing in the 906 drivetrain is made new on our own gear-cutting machines.
  • Housings and covers, new
    magnesium bell housing and side cover with cast-in steel bearing insert — made in-house, in stock.
  • ZF limited-slip differential and final drive
    clutch-type LSD in uprated form with Nadella flanges, plus the uprated 7:31 final drive — both in stock.
  • Fittings from stock
    gearbox and exhaust mounts, spring-loaded reverse lock-out as used by Porsche Motorsport, release lever, shift finger, clutch rocker and clutch rod — all newly made.
  • Event preparation
    rebuilds between race meetings, so the car keeps to the season’s schedule.

Typical problems this solves

  • Racing gearbox parts unavailable since the sixties
  • Wear from race outings that has to be replaced predictably
  • Historic cars standing still over gearbox worries instead of running

Why inquire here

Racing means deadlines. With in-house production and a test bench we deliver ready to install and documented — in time for the next event.

In stock for the 906

A different gearbox type?

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Made in-house

Parts for the 906, newly made

Made in-house in Ottrau, Germany, most parts in stock. Click to enlarge.

All parts in the catalogue →

906

Magnesium bell housing with steel insert

In stock Newly made Enquire →

906

Magnesium side cover

In stock Newly made Enquire →

906

Steel insert, cast into the housing

906 gearbox intermediate plate: steel bearing insert cast into the housing.

Enquire →

904 / 906

ZF clutch-type LSD, uprated

Porsche 904/906 ZF clutch-type limited-slip differential, uprated version with Nadella flanges.

In stock Newly made Enquire →

904 / 906

Gear pair “Y”

In stock Newly made Enquire →

901 / 904 / 906

1st gear 14:37

1st gear for the 904, 906 and 901 = 14:37.

In stock Newly made Enquire →

904 / 906

Spring-loaded reverse lock-out

Spring-loaded reverse gear lock-out as used by Porsche Motorsport, for 904/906 gearboxes.

In stock Newly made Enquire →

904 / 906

Release lever, detail

In stock Newly made Enquire →

904 / 906

Shift finger

In stock Newly made Enquire →

904 / 906

Clutch rod with ball nut

In stock Newly made Enquire →

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From the workshop

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

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