Roamerdrive SS Series Overdrive

(30 customer reviews)

£1,750.00 Excl. VAT

The Roamerdrive unit is supplied as a comprehensive kit including all parts required to fit, including linkages and gear selectors.

Roamerdrive Kits include printed fitting instructions.

CUSTOMER NOTICE: Due to delays with our supply chain on Roamerdrive units processing for dispatch may take slightly longer in some cases.  We expect all orders to be dispatched within 7-10 days (but we will always aim for earlier where possible).

Thank you for your patience at this time.


SKU: DA9015 Categories: ,


The Model SS ROAMERDRIVE is an upgraded version of our model SX first introduced in 2004. The upgrades on the SS model include a more open front-end architecture that enables oil shared with the transfer case to be circulated more efficiently. An Archimedes screw on the main shaft retains oil behind a ‘dam’ in the front cover to ensure efficient lubrication at high speeds and on steep inclines.

The SS model was first developed to meet the demands of enthusiasts installing non-standard 200 Tdi and V8 motors into Series Land Rover where the SX versions were found to run at elevated temperatures in high speed motorway driving.

This modern overdrive uses planetary gear technology developed from North American automatic transmissions and has little in common with the historical designs of overdrive such as the Fairey, Toro and Santana that were developed in the 1960s using spur gears. Compared with these heritage designs, the SS ROAMERDRIVE runs virtually silently and experience has shown that owners can expect to cover many, many thousands of miles with no service required whatsoever.


The shift lever is fitted to the R.H. side of the transmission tunnel in the same way as older designs of Series overdrive. Exposed lever components and trim are made of stainless steel.  A dipstick assembly is provided to monitor transfer case oil level. This dipstick screws into the oil filler aperture and a convenient alternative filler plug is provided in a new top cover plate.


This overdrive will fit all Land Rover Series I, II, IIA and III, four and six cylinder models, with the exception of those fitted with one-ton transfer cases.  It will also not fit the Stage 1 V8 model.

On six cylinder models, the ‘L’ bracket to which the lever mounts must be extended forward by 50mm.


To engage the overdrive when on the highway, wait until you are travelling at about 50 mph (80 kph) in fourth gear. Depress the clutch and move the actuating lever forward exactly as you would when changing gear.  When the clutch is released the engine RPM will drop by 28% and the noise level in the cab of the Land Rover will drop significantly. As changing traffic and gradient dictate, you can engage and disengage the ROAMERDRIVE.

You will find the Global Roamer overdrive very useful as a splitter gear between normal third and normal fourth.  This allows you to climb long hills where normal fourth would be too high and normal third too low.

You cannot damage a ROAMERDRIVE by using it in all gears.

In off-road conditions, when driving in low range, the overdrive is useful for raising the ratios making it unnecessary to engage and disengage the high range lever.

Driving a Land Rover with an overdrive is a pleasant experience as it is possible to have a normal conversation at relatively high motoring speeds.

The inclination to drive faster with the overdrive negates considerable fuel savings to be had if one retains one s original driving patterns. Our experience shows that drivers who use the ROAMERDRIVE at moderate speeds will save up to 15% on their fuel costs. Long-term reduction in wear and tear of engine and drive line components is also considerable. Bear this in mind and your Global Roamer overdrive will pay for itself quickly.


Below are the Warranty terms direct from the manufacturer (  No warranty is given by Syncro Gearboxes:

“Unless otherwise stated elsewhere, ROAMERDRIVE overdrives are warranted against defects in materials and workmanship for a period of one (1) year from date of purchase.

This warranty is made to the original purchaser only and covers ROAMERDRIVE overdrives that have been installed on the same vehicle since purchase. We (or our appointed distributor) will repair or replace any overdrive unit that suffers from manufacturing defects within the warranty period.

In order to take advantage of this warranty the unit must be returned, at your expense, to the distributor. If you purchase the overdrive directly from our factory in West Vancouver, the unit must be returned to our factory at your expense.

PRIOR TO RETURNING a unit under warranty, you must first contact your distributor, or our factory in West Vancouver, to discuss your issue. Once we have all the necessary information, we will issue a Warranty Return Approval document. We will NOT accept any unit that is returned under warranty if it has not first been issued a Warranty Return Approval document.

Your Warranty Return Approval document will have detailed instructions on the shipping documentation that must be sent with the overdrive unit being returned under warranty. Not following the warranty return shipping instructions may result in unnecessary additional government charges being levied, which will be your responsibility.

Once warranty work is done, our distributor or the factory will return the unit to you freight prepaid.

Transfer case gear noise is not covered under this warranty.   If your transfer case gears are worn, then your noise problem can be rectified by replacing these gears, not by replacing the overdrive.  It should be noted that initial cases of minor gear noise tend to be self-correcting as the new and old gears in the gear train bed in together over the first 10,000 km.

Under no circumstances will we cover the cost of removing or replacing the overdrive on a vehicle, or be responsible for any other expenses whatsoever.

Our warranty does not cover damage caused by lack of lubrication, use of improper oil, or damage caused by overheating the ROAMERDRIVE in applications with non-standard engines and gear boxes.”

Additional information

Weight 21 kg

30 reviews for Roamerdrive SS Series Overdrive

  1. Jeffrey (verified owner)

    Very fast service and a quality product.

  2. Steffen (verified owner)

    just perfect what a different driving whit overdrive. thanks from Hamburg/germany

  3. HANS-JÜRGEN ROTH (verified owner)

    Ecxellent Service, fast Delivery. Top

  4. Michael D. (verified owner)

    Fast delivery, good price, easy install. Note that VAT and Export fees apply and are charged by the shipping party when shipping to Netherlands.

  5. Mary T. (verified owner)

    Instructions excellent, easy to fit and works really well.

  6. James Ferrissey (verified owner)

    The installation was no problem and works well, It really is a well engineered overdrive with great instructions, the only minor problem was the dipstick adapter did not fit the 1/8″ bsp level plug hole so I was able to get one on Ebay to complete the job. Syncro gearboxes delivered the Transfer cooling plate and Roamerdrive very quickly.

  7. Brian L. (verified owner)

    Superb quality at the best price around. Arrived in 4 days. Thanks!

  8. Brian L (verified owner)

    Ordered Sunday arrived Thursday. All parts present and correct, all brand new and unopened. Fantastic service at the best price. Will use this company again. Thanks a million!

  9. Tobias (verified owner)

    Perfect! Only 8 days delivery time to Germany.

  10. Morven Wood (verified owner)

    Bought the ss overdrive good price and very fast service.

  11. Tony Clayton (verified owner)

    Best price around and arrived 2 days after order.

  12. Olaf F. (verified owner)

    One of my fastest and smoothest parts orders at all!

    I hope the gearbox runs just as smoothly!

  13. Kevin C. (verified owner)

    Shipping was fast. Everything was packed very well. Easy to install. Installing shifter was a bit tricky. Ground a bolt to a point and screwed it into the L shaped shifter bracket. Turned the bolt out until it touched the transmission tunnel, hit the area with a hammer. Removed the tunnel and drilled a hole where the pointed bolt had made an impression. Perfectly centered 2″ hole for the shift lever to fit into. Now to reinstall the floor pans. Easy peasy.

  14. Joe T. (verified owner)

    Delighted with the overdrive, excellent price and fast delivery.

  15. Thomas Steinbrech (verified owner)

    Fast and perfect delivery

  16. Pieter den Haan (verified owner)

    just super

  17. Carl Attwood (verified owner)

    Friendly, communicative and prompt

  18. Michael Seeds (verified owner)

    Price and delivery first class , would have been 5 but for a missing part that has had to come from Roamer in Canada

  19. Juergen R. (verified owner)

    Very good service, quick delivery, five stars at all.

  20. James M. (verified owner)

    Good price, quick delivery and easy to install. Driving much nicer now!

  21. Paul B. (verified owner)

    Delivery as stated. Wooden box well packed. Brilliant quality parts. Full fitting instructions included. Fitted 30th June 2020, Wow. What a difference. Yes it works in all gears. The recommended oil has made my existing gear box quieter. 28% increase in top speed if l want it. But l prefer to cruise with less noise in my 1969 2A. Thank you

  22. Marianne (verified owner)

  23. Ralf (verified owner)

    Absolutely perfect from timely delivery over fitting. Not prepared everything right now for the first drive but the assembly and mounting is fantastic…

  24. Stephen Martin (verified owner)

    thanks guys only used it once and it was nice to here ones passenger on the journey, looking forward to the summer.

  25. Michael T. (verified owner)

    Have yet to install, but a very competitive price, and a well packed, comprehensive unit so all looking good !

  26. Euan M. (verified owner)

    Excellent unit. Much improved over the original design.

  27. Ivor Morgan (verified owner)

    excellent service although delayed by new year hoilday

  28. John Stokes (verified owner)

    Great bit of kit for the Land Rover. Fast and friendly service. So good I bought two of them.

  29. R N R. (verified owner)

    Excellent service and good price.

  30. Jan V. (verified owner)

    Excellent and very fast service.

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