Costin Motorcycle Engineering

13/09/2023

Finally finished this lot…
2 x 1998/99 YZR500 replica frame kits..
One is for use with an original YZR engine, the other is for an RZ500 engine
I’ll post pics of the frame with the YZR500 engine in a few days….

26/01/2023

Last 6 months we’ve been flat out catching up on frames and swingarms…. This is some of what we’ve finished..
90 & 93 YZR500 swingarms , 98 YZR500 frame and a 1990 OEM restoration…. 98 swingarm will be finished soon and I’ll post that up as well…. Interestingly, 98 frame and swingarm will house an original 90 YZR engine….👍👍

08/06/2022

Finally finished the new 1990 Rainey YZR500 replica….
As with all our bikes, fully custom made frame, swingarm and chassis parts. All made to replicate the original bike as close as possible .. fully rebuilt engine with VM34’s, ported cylinders, o ring heads, dry clutch, new cranks, ohlins forks and shock.. as close to the original bike as you can get….
Bike shipped to the USA this week..👍👍

12/02/2022

Lately, we have been making a few YZR500 swingarms….
Some are for replicas… 2 are for genuine YZR500’s…..
This year we are a making a couple of frames to be used with genuine YZR500 engines…👍
It’s a lot of work making these parts, but it’s the details and accuracy which makes it worthwhile …

04/12/2021

Here is the new 1990 Rainey rep we are building for a customer in the states!! I’ve just picked it up from the painters. Next step is finishing off wiring, cables, hoses etc… then dyno… I’ll put up some more pics shortly

02/11/2021

lately we have been getting orders to make parts for original YZR500's and NSR500's.
This is a NSR500 frame we just finished for a customer who is lucky enough to own a genuine NSR500 engine.
The tolerances between the engine and frame are very close, especially around the swingarm pivot. It took twice as long to make this frame as it does making our replica frames.
Pretty happy with the way it came out
The tooling for the "H' and the overly complicated shock adjuster just adds to the fun....

06/06/2020

Just putting the finishing touches on this Wayne Gardner 1989 NSR500 replica... its based on the bike he raced at Phillip Island that year. This RZ500 engine is putting out 115HP using 34mm Mikuni's, larger dia pipes, HPI Ignition, YZ85 Vforce reeds, O'Ringed head and TZ based dry clutch..
Fully custom frame and swingarm using HRC extrusions in the frame. Original NSR500 tank and seat and slightly modified fairing.
Modified RC51 forks and RS250rGP shock.... Honda 6 spoke wheels.
This bike was also used in the promotion of the Wayne Gardner movie
There are more pics on my web site... Costinmotorcycleengineering.com.au

06/06/2019

Sending this 1988 XR74 RGV500 replica to New Zealand tomorrow.... Its a replica of Scwantz's bike he used in the latter part of 1988 when they changed fairings and put both exhausts on the same side. It has original RGV500 fairings, tank, seat, front brakes, shock, silencers, radiator....it uses 34mm round slides with YZ85 Vforce reeds... first dyno run had 105Hp......I reckon we can get to 115HP plus with some more sorting😁😁
more pics on my web site shortly👍👍
This was one of the bikes used in the promotion of Wayne Gardners movie!!
Dyno run here...
https://www.youtube.com/watch?v=NjFBeE9dKNM

01/11/2018

Sent this Doohan 1994 NSR500 to the UK today...it has factory NSR forks, billet brembo calipers, RS250 GP shock, NSR500 fairing and structural seat, titanium pipes, carbon/Kevlar silences, Costin frame, swingarm and all chassis parts... hope the new owner likes it!!!

04/08/2018

20 months ago I was contracted to build 2 promotional race bikes for the new Wayne Gardner movie. The movie premier was in Melbourne last night....now I can finally put up some pics of the bikes!!! 1989 NSR500 and a 1988 RGV500 (late model) ... WG is such a great bloke...took interest and took the time to ask me questions about the bikes even when the media were hounding him for questions..legend!!!

27/12/2017

Finally finished engine for a Doohan NSR...all new cast clutch cover and water pipes, Ducati dry clutch conversion, external pivot power valves and Stan Stephens redesigned 2 into 1 carb manifolds.....starting final build January 👍👍

24/05/2017

New frame I've made for a Kevin Schwantz 1988 RGV500 Pepsi Suzuki..years 88/89 have some of the most beautiful 500's ever made!!

19/10/2016

Im on a bit of a roll here.....
This is the 1994 NSR500. The first pic is the completed frame and swingarm mocked up in an early rolling chassis. The engine has had RZ350 barrels grafted on by Stan Stephens in the UK...The last pic is obviously paint. the build is a bit back to front, normally we do paint at the end, but this bike has taken such a long time to get everything to fit that to speed up the last few months we painted it earlier. Still have to finish the pipes and intakes. Plus the new RGV500 Pepsi Suzuki is almost ready for paint and we didnt want 2 bikes sitting at the painters gathering dust!!!!

19/10/2016

Costin Motorcycle Engineering

19/10/2016

Costin Motorcycle Engineering's cover photo

19/10/2016

Also had some pretty cool people come over and have a look...guess who?

19/10/2016

Took the Rainey bike to Barry Sheene this year and had a great reaction..the bike is in there somewhere!!!

19/10/2016

Sorry everyone...better late than never. We moved shop down to sunny Wollongong. Took some time off to get the new workshop and our house sorted, as well as getting the kids settled.. My social secretary/web mistress/wife has now got a full time job so all facebook and website stuff has been forgotten about.. I promise to get my finger out and post regular updates. Ive been doing bits here and there but the last year I have been back full time on the bikes again...So heres the finished Rainey bike

Heaps more pics on this website....

http://www.motorcycle.com/manufacturer/yamaha/yamaha-yzr500-wayne-rainey-replica.html

Plus a short video here..
https://www.youtube.com/watch?v=4F9ltLTBG28

13/07/2013

Jeff Ware from Rapid riding ABE bike....

14/09/2012

end of the day....

14/09/2012

original YZR500 magnesium handlebars, clutch lever, kill switch and brake mstr

14/09/2012

swingarm...

14/09/2012

sorry about the long delay..we just got the Rainey frame and swingarm back from the painters and can start final assembly..

07/02/2012

been a while since my last post.... we have been moving along slowly with the Rainey bike, finished and shipped another 1998 frame and have almost finished the new NSR500 frame which I will post up here shortly. We have also been collecting parts and restoring a genuine 1993 ROC500. the frame was one of the ROC frames used by Roberts marlboro yamaha in 1993. It was then sent back to ROC and updated to 1994/95 spec and was then used by Fred Protat. The cases are factory magnesium cases and are from Niall McKenzies 1994 Yamaha France's bike.. I will also but pics of the ROC up shortly once its assembled..cheers Mick

06/10/2011

Pic #2 of 1990 Frame and swingarm into rolling chassis.....

06/10/2011

We just put our new 1990 frame and swingarm into rolling chassis. YZR500 forks, wheels, brakes - getting closer.

22/09/2011

Costin Motorcycle/Eng Rainey 1991 YZR500 Replica - RZ500

Thanks heaps Mike for the video - the next two bikes are going to the UK, so maybe you can get together and have your own 500cc GP race..!!

This is our 1991 Wayne Rainey YZR500 replica using a RZ 500 engine, for more information head here; http://www.micoproducts.net/raineysheenebike.htm. Thanks ...

15/09/2011

This week at CME - we sent this frame, rear-sets and sub-frame to a customer in Sweden - a 1998-2002 YZR Frame. Enjoy!

13/08/2011

Magazine Articles

"A Day in the Life of Mick Costin" - Two Wheels magazine, 2010.

28/07/2011

track day bike

Check out our new YZR500 frame, for the 1990 Rainey build!!!