Workshop Services

REX’S REWINDS

  • TZ Rewinds
  • Kawasaki Triple CDi Ignition & rewinds
  • SR500/RD250/RD350 Rewinds
  • Rotax MT350 | MT500 | CCM604 Rewinds
  • Suzuki GT models Including 750cc
  • Honda CB72-77, CB250 & CB400 Superdream rewinds
  • XS650 – Coming soon!
  • Testing of regulator rectifiers
  • Lucas Rita repair and knowledge centre
  • Full Testing of Pazon Ignitions
  • Full Testing of Tri-spark Ignitions
  • Classic bike ignition systems
  • Dynamo parts specialists
  • Testing of certain CDI Units

Our stator rewind service has changed to improve quality and meet new market conditions. Please contact the technical team before sending parts to us.

– There is an inspection charge of £25 + return postage, + VAT where we inspect a stator to provide a quotation. This is charged where the customer does not proceed with work or the part is unsuitable for repair. This fee is waived where the go ahead is given.

The overhaul of a stator represents a labour intensive and precision process which requires a high degree of skill, knowledge and tooling. We aim to achieve the same, or to exceed the quality of the OEM part so do not offer a rush service. We work to standards that are second to none and will only carry out repairs after an initial inspection of the part has ensured that it is suitable for repair and that winding will go on to prove be reliable in service. If the part sent to us is not suitable for repair or the customer does not wish to have the work carried out as recommend by the technician only the assessment fee is due.

“In the same way that putting new piston rings on an old piston and deglazing the bore is not an engine rebuild, putting a few turns of new copper on top of old insulation and re-using old wiring looms is not a stator overhaul.”

We also supply new alternator parts, ignition units, regulator rectifiers and HT ignition coils and complete ignition systems. Our experts are on hand to test parts and advise on electrical issues.

Repaired overhauled kawasaki KH400 generator stator 21003-032
New Kawasaki H2 750cc Triple stator generator magneto alternator rex
TZ rewinds and repairs to yamaha race bike ignition stators
Suzuki gt750 repaired rex rotor 31402-31011-31402-31012-

HOW LONG WILL IT TAKE?

We hold newly manufactured parts in stock, often a new winding can be fitted to a stator, a service exchange supplied or a brand new stator supplied, these options are far quicker than a rewind. We do offer Next Day delivery on new parts in stock so customers can fit parts themselves where a fast solution is needed.

IMPORTANT: We do not offer a rush service for stator rewinds. Our focus is on quality and workmanship and we do not pretend to be able to carry out rewinds on demand at short notice. If you are booked in to a race, give yourself several months to prepare. Where possible we offer service exchange parts and new parts that we endeavour to hold in stock ready for immediate dispatch. However we do not offer quick turn round rewinds.

REWIND & REPAIR PRICING GUIDE

Important:  Our guide at version 8.2 is in force and is the only valid version. Customers are asked to carefully read this as our service has altered and now different charges apply.

The price guide contains details of the service we provide and the standards we work to for your reference.

Click on the image to view the latest pricing guide (opens a PDF Document)

rexs speed shop cdi unit, dynamo alternator generator magneto stator rewind repair, regulator rectifier, ht coil, replacement

Sending parts to us

Please send your item to:

Rex’s Speed Shop
Unit 1, Russet Farm
Redlands Lane
Robertsbridge
East Sussex
TN32 5NG
United Kingdom

  1. When sending from overseas, IE the EU, USA or Australia, the value you declare on the parcel, OR insure it for will cause import TAX to be applied. This TAX is added to your bill in addition to any quoted price for the repair work. If you put a large amount you will have a large bill to pay on top of the repair.
  2. Be realistic of the value of a failed, second hand unit! A value of $10/€10 is fair for a failed old motorcycle part! Usually such a value means no TAX is added.
  3. Include your contact details as well as a phone number or e-mail address. Delay results if we are not able to contact the owner for authorisation to proceed with work.
  4.  Include a conscise explaination along with the item you have sent.  If you have e-mailed us, including a copy of the e-mail is very helpful and will speed things up. We speak to many people every day often about similar bikes so “As per telephone conversation here’s the part for repair” can cause a long delay while we wait for you to contact us.
  5. We often refuse to work on stators customers have stripped parts out of.  The full stator with its mounting plate and windings in position should only be sent.

Repair work is chargeable per hour and workshop prices are always quoted excluding VAT.

Payment

We accept most major credit and debit cards over the phone or we can send you a secure payment link via e-mail.

Overseas customers may wish to use Wise. This service may save the customer a considerable amount on foreign currency exchange fees. Check the Dollar cost of your bank or debit card, then compair the Dollar cost to you at WISE.

We can supply our bank account details on request.

Take care to enter account details accurately.

Take care to ensure you pay in the correct currency.

REX’S Kawasaki Triple Stator Rewind CDi & Electronic Up-grades

We offer two levels of service; a bespoke restoration service for owners looking to attain the highest levels of originality where original units are fully restored with plating and decals where required. The second service is aimed at owners who simply require parts repaired to the highest standard but without concours finish to the metalwork. We offer a wide range of services from the design of new electronics to fit inside OEM metal cases to new ignition units in lower cost plastic boxes.

Rex’s have been synonymous with the repair and manufacture of new electronics for Kawasaki triples for over ten years and have in-depth specialist knowledge. We have an active and ongoing development program for the Triples building on the services we currently offer. Our workshops have comprehensive test equipment so we can trace faults as well as fully test every part we manufacture before it is dispatched to the customer.

We offer new replacement regulator rectifiers, HT ignition coils, new stators and a industry leading rewind and restoration service.

We are also happy to fit new electronics in to metal cases the customer has prepared and had replated.

New Kawasaki H2 750cc Triple stator generator magneto alternator rex

REX’S RMK Ignition Kit Repair, Service & Parts

We fully support our own electronic ignitions with a fast and effective spares and repairs service. All XT500, DT250, DT360, DT400, TY175, TY250 & SWM ‘RMK’ kits are covered. As the original manufacturer we have the knowledge and equipment to fully test, trouble shoot and get you going – fast!

Unlike most of our competitors, we offer full servicing, spares and repair of our own electronic ignition up-grades!  All parts in current manufacture are made available as spare parts, in case they are ever needed. We will always do our best to get an older kit going again for as little as possible and less than the cost of a new kit. Where we can we will try and save you money!

Some of the the very early systems are no longer supported, but again we will look at options to save you money.

We stock new parts ready for quick dispatch. There is no inspection fee on RMK kits.

– RMK CDi units

– Source windings

– HT coils

– Stator Looms & hardware packs

Made in England

electronic-ignition-stator-kit-DT250-DT360-DT400-RMK-Rexs-speedshop repair service.

CLASSIC TZ, MX AND RACE IGNITION – TZ REWINDS

Racing ignitions require careful repair to restore tham and ensure they are reliable. Often the OEM equipment will out perform so called modern up-grade systems, so it is worth repairing. We have a wealth of experience with racing ignition systems and over the years we have carefully catalogued each one to create an extremely comprehensive reference database. As a result we can offer repairs and rewinds that are second to none.

Poorly repaired, old or off specification windings can cause CDi units to ‘lock out’ or give running issues. CDi windings must precisely match the OEM specification, within 5% or closer for best results. The closer to the specification the better the ignition will perform. Windings that are old, poorly repaired or off specification will invalidate any warranty on CDi units.

We can supply new ignition units as well as seal modern electronics in to original cases to maintain original appearance.

Rexs rewind service for classic TZ race bikes TZ125, TZ250, TZ350 repair cdi unit

ALTERNATORS WITH ROTATING FIELD WINDINGS

Suzuki GT750 | Honda CB750 | CB900 | Yamaha XS650 | Kawasaki H1-A H1-C

New windings are made in-house on CNC machines. Stator windings have to have several sets of special tooling made, for the models above we have them ready to hand. The only ‘problem’ with any of the above systems is that they are now over 40 years old. When properly repaired to high standards the original equipment proves to work without any problem, also machines that are completely standard will always fetch more money.

We find that at this age the Suzuki GT750 rotors suffer low insulation resistance on the slip ring assembly. The only option is a replacement, for which we have a repair scheme.

Voltage regulators that fit into original cases and period repreduction rectifiers are now possible.

repair service for Denso stator suzuki gt750

Testing | Pazon | Tri-Spark | CDi units Service & Parts

We hold stock of all the parts for Pazon ‘Sure Fire’ kits and can test these ignition systems under real load conditions. Please note we deal with warranty only where the customer has proof of purchase from us and up to one year from date of purchase. We can look at kits brought elsewhere, but you will be charged at our standard rates in this case. We gladly take on work for all customers who don’t want to wait to return kits to New Zealand.

Tri-Spark kits – we are able to run many of these systems these under real load conditions. Please note we deal with warranty only where the customer has proof of purchase from us and up to one year from date of purchase. We can look at kits brought elsewhere, but you will be charged at our standard rates in this case.

CDi units. We can fully test all CDi units we manufacture, and the original systems they fit. For all others please check.

Ignitech – We charge per ‘plug-in’ to alter progamming and for testing.

Important – Please check BEFORE sending units for testing. We charge a handling fee and return postage for all items sent to where work is not possible.

lucas rita repair fix fault find service for ab5 ab11 electronic ignition
pazon sure fire electronic ignition testing repair service & parts

Testing | HT Coils | Rectifiers | Regulator Rectifiers | Armatures Service & Parts

We offer a low cost flat fee for a check of these items. We are able to test most regulator rectifier units, rectifiers and HT coils. However if you unit has no wires, just a pins in a plug please provide a clear diagram of which wire colours go where.

We offer a low cost quick test for a flat fee which is great if you need to know if a parts is working or not or breaks down under load. Should the customer require indepth testing under loaded conditions we can provide this but this is not included in our low cost ‘yes/no’ test fee.

Important – Please check BEFORE sending units for testing. We charge a handling fee and return postage for all items sent to where work is not possible.

testing troubleshooting service for rectifier regulators motocycles electrics, HT ignition coils
testing service for motorcycle electrical parts armatures

BESPOKE RESTORATIONS

We restore many electronic parts to look like brand new original equipment with the benefit of modern reliability. This service is highly popular with restorers who are looking to achieve a perfect machine complete with its original electrics that work reliably. We offer:

  • Electronics design & manufacture
  • Plating & passivating to high standard
  • Blast cleaning and polishing
  • Welding
  • Turning and milling
  • Testing and mapping of electronic ignition
  • In-depth knowledge of Japanese electrical systems

We constantly strive to improve quality and standards when designing and manufacturing electronics and when under taking bespoke restoration to customer’s motorcycle parts. We have developed our own processes and equipment to strip and re-assemble electronics and generators without damaging them. Much of the restoration work is carried out in-house, with the exception of a few specialist processes. We have the knowledge and experience to do the job to the highest standards.

EXAMPLES OF OUR WORK

We restore many electronic parts to look like brand new original equipment with the benefit of modern reliability. This service is highly popular with restorers looking to achieve a perfect machine complete with its original electrics that work reliably. We offer:

Fully restored Kawasaki H2/A Solid State Magneto (CDI) assembly

First the cases are stripped of the old electronics, then metal cases are zinc plated. Modern electronic circuits are built and test run before they are sealed to the refurbished cases. The unit is fully assembled, tested on the bench and the work is completed with a new set of decals, leads and connectors.

Kawasaki H1/D Stator rewind

Newly manufactured Honda RS500 stator

Fully repaired and rewound TZ250 4DP generator stator

‘Restored & reloaded’ KH400 CDi unit

New electronics sealed in to a replated case finished with new decals.  New leads & connectors backed by a one year warranty

Suzuki gt750 repaired rex rotor 31402-31011-31402-31012-

Suzuki GT750 fully restored rotor with new slip rings