do-it-yourself WR450F WR250F YZF MOTARD INFO pack
frequently asked questions
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PLEASE NOte: we no longer supply the laser cut parts!!!
The rise of cheap motard wheel sets and the increasing lack of Honda CBR wheels has led to virtually no orders for these laser cut parts, so unfortunately we no longer supply them.
However, you can right click and save the dxf file here to have your own disc adapter plate laser cut from 4mm mild steel plate if you take this plate to a laser cutting service. If you need the dxf file for the caliper adapter plate for the Suzuki or Yamaha conversions, right click and save the dxf file here and have this cut from 6mm mild steel plate.
The good news? If you use the three-spoked CBR250R wheels and the 310mm front disc these come fitted with, you won't need the disc adapter, but only the caliper adapter plate and these are quite easy to make if a laser cutter is going to charge you a lot.
You must read and agree to our legal disclaimer here before any download of info packs or purchase of laser-cut parts. See our WR450F motard wheel chart to decide on which info pack below suits you best.
Free download of the WR450F three-spoked CBR250R wheels info pack here.
Free download of the WR450F six-spoked CBR250RR wheels info pack here.
Then read this thoroughly, and the answers below, before emailing any questions.
are the recommended wheels easy to find, and cheap?
In most countries, yes. The three info packs use either:
- three-spoked wheels, Honda CBR250R (MC19) 1988-1989
- six-spoked wheels, Honda CBR250RR (MC22) 1990 -1999
- five-spoked wheels, Honda VTR250 (MC33) 1998-2010 *not the earlier 3-spoked ones!
Don't email us about the new CBR250R recently released by Honda, it's a totally different bike.
See the home page for a sample list of Australian wreckers, expect to pay between AUD$300 and AUD$450 for your cast wheels. When they come up on Ebay these wheels will be around $150 to $300 each. You can also post a request at www.findapart.com.au and the wreckers email you with their prices; just take your pick! Most wreckers post worldwide if you have trouble finding a particular wheel.
These bikes were 'grey imports' around the world. They are extremely common at bike wreckers in Australia, New Zealand and Japan. Less so in Europe and the United Kingdom, and scarce in the USA. Don't confuse the 2012+ CBR250R with the models above, it definitely has different wheels and our laser-cut parts will not suit.
If you are in the USA, you can actually use the six-spoked 16 inch front wheel from the CBR600RR and CBR900RR; these wheels are very common and cheap in the USA and worldwide (please note you do need to loosen your disc bolts to allow fitting of the caliper with a 310mm disc due to the smaller diameter wheel- this adds a few minutes to your changeover time).
If opting for the three-spoked wheels, you can also use the Honda VTR1000 front wheel (1997-2006 SC36/H687) which has the wider 3.5 inch rim to allow use of a 120 width tyre if desired.
Rear disc? There is a 240mm Honda disc for the six-spoked wheels available very cheaply on Ebay, but the three-spoked wheels require a 240mm custom disc made by Metal Gear (based in Brisbane, Australia) which should be around AUD$150.
how much will the conversion cost me in total?
The wheels used are from very common models at the wreckers. Larger wreckers often have multiple sets and will sell them cheaply. You should be able to complete your wheel set with tyres for under AUD$1000 if you got your wheels for a good price, an absolute bargain for motard wheels with a cush drive hub. We have had guys report their complete kit was less than AUD$500 when they bought their wheels from Ebay with tyres already fitted!
why do you only use honda cast wheels?
Why the Honda wheels? Unlike most cast wheels, the rear hub is quite narrow despite the cush drive, so does not need expensive machining and the wheels are much lighter. The axle and disc sizes are much easier to adapt to most bikes too, and there are plenty of cheap aftermarkets parts for these Honda wheels because the CBR250 models were so popular. The CBR models are very common track racers, so these wheels are designed for 45 horsepower output and a bike weight of 132kg - perfect for the typical motard.
If you decide to use other wheels, our general info pack may be of use.
is there much work involved to motard my bike?
Unlike most cast wheel adaptations, no. There is no messy expensive machining of the rear hub which is normally needed on the rear hubs. Here's all you need to do:
- buy the specified wheels, rear axle & discs from wreckers or Ebay etc
- download the dxf files and get the adapter plates laser cut
- buy the specified high tensile bolts and nuts for the supplied caliper adapter plate
- get the spacers and shims machined as per supplied diagrams
- get an electronic speedo if for road use.
what disc options do i have?
The three-spoked CBR250R wheels use the standard Honda 310mm front disc. We still include the disc adapter as it allows you to use your standard 250mm brake disc if wanted. The rear disc is only a 220mm and you should a custom 240mm custom rear disc made (files and instructions supplied if needed) or buy a custom one from Metal Gear for around AUD$150. If using the disc adapter plate on the three-spoked CBR250R wheels, you'll need to drill out the 6mm bolt holes to 8mm to suit the Honda wheel. Read more about the disc adapter plate here.
Five- or six-spoked wheels? There is a cheap Honda 240mm rear disc that fits perfectly (full details in the info pack). Up front, you can either bolt your stock 250mm WR front disc on to the supplied disc adapter, or use the supplied caliper adapter plate and buy a floating 310mm DRZ400SM front disc available cheaply on Ebay (full details on this in the info pack)
which yamahas will this fit?
These info packs should fit all WR450F, YZ450F, WR250F and YZ250F models with a 20mm front axle and 22mm rear axle.
Don't email us about bikes that aren't listed, or the earlier WR400 and WR425 models. We haven't tested those and simply don't know how much of these info packs would be correct or not. Use our generic info pack here.
Please note we've had very few orders for the Yamaha info packs so we are relying on info from Yamaha about the consistency of specifications across these models.
do i need to modify my wr450f OR wr250f?
You'll need to file a few mm off the alloy tabs on your fork leg that hold the speedo drive in place - very easy to do and it won't affect your speedo drive when using the dirt wheels.
how much will the wr450 conversion cost me in total?
This depends initially on how much you pay for the wheels and rear axle at the wreckers. Expect to pay between $400 to $700 - wreckers will often sell cheaply if they have too many sets so it's worth starting at the bigger wreckers first. The six-spoked wheels will generally be a bit more expensive than the three-spoked wheels. Add $59 for our laser cut parts.
You will need an electronic speedo - this applies with any motard wheels you buy (more info below). If you can machine your own spacers and caliper adapter plate then that's pretty much it.
do i need approval to use these WHEELS on public roads?
Any vehicle modification is likely to be subject to the need for inspection and approval by the relevant government department in your country. It would be your responsibility to pursue this. Of course this would apply to any set of motard wheels you happened to buy, spoked wheels or cast wheels. Again, it would be your responsibility to check this out. Don't assume you will be able to sell the bike with these wheels on - keep your trail wheels for selling your bike registered. We've never seen anyone raise this as an issue in the motard forums so it would seem that motard wheels are legal in most countries, or the cops don't bother checking this particular vehicle modification.
are you a business?
No. A group of us have been trail riding for years but family commitments meant very little time for this any more. Our fitter and turner mate adapted cast wheels for his DRZ and gradually did the same for the rest in our group. We've been flooded with enquiries everywhere we go, and eventually put this site together because we love motarding. It's not about profit; the cost of these info kits helps to maintain this site so we are just sharin' the lurv... I work in the mines out west but have mates who will ensure postage of parts when I'm out of town.
can i use my existing WR speedo with the kit?
No. We highly recommend electronic speedos like the Trailtech Vector, Vapor or Endurance. We use them and love them, great speedos! You may choose to sell off your old speedo which will probably more than pay for a brand new Trailtech ($100 to $165 on Ebay depending on the model). These are getting cheaper each year as the price of electronics drop; check Ebay or buy direct from the Trailtech site here.
what gearing would you suggest FOR THE WR450f? can i use the same sizes between my motard wheels and trail wheels?
The info pack looks into these issues in a general way as there is no such thing as the ideal gearing - everyone rides differently. If you don't mind some compromise in your road/trail gearing you can use your existing chain.
what tyre sizes are used on these rims FOR THE WR450?
The standard rear tyres on the rear rim are 140/70-17 or 150/60-17 for all these Honda wheels. The 140/70-17 is cheaper, but not a common tyre, so moving up to the 150 range gives you a much wider choice of tyres.
The standard front tyre on the front rim is usually a 110/70-17. Riders who race the 250s find plenty of grip with this, and the Japanese 250 sports bikes are the same weight and have a much higher power output than the DR650SE, so this tyre is more than up to the task.
However, if you use the CBR250RR six-spoked wheels, you can opt for the 16 inch CBR600RR or CBR900RR front wheel which take a 120/80-16 tyre for maximum rubber on the road and have the same rolling diameter as the 17 inch wheels. Many Fireblade riders sell these to swap over to the 17 inch front wheel for stability at high speed.
If using the three-spoked wheels, you can opt to use a Honda VTR1000 17 inch wheel which is a 3.5 inch rim and takes a 120 width tyre.
are the wheels properly centred? i've heard wheels can be deliberately off centre?
Your front wheel should always be centred within the front forks, as they are on these kits. Because of the way steering geometry works, it is not so crucial to centre the rear wheel because it is trailing the front. Deliberate off centring does occur in motard competition as the rear tyre often needs to be off centre so that the wider tyres they run don't rub against the chain. The degree of this offset can be quite pronounced as tyres as wide as 170 or more are squeezed into enduro bike swingarms! The rear wheels in our kits are a few mm off centre and there will not be any chain rub with the 150 tyre you can fit to these rims.
disclaimer ON WR450F WR250F YZF MOTARD INFO PACK
As mentioned, no responsibility is taken for the information, parts or wheel kits. All efforts are taken to describe items accurately, but no responsibility can be taken for any injury or damage arising from using this information. It is your responsibility to ensure your wheels are thoroughly checked by a mechanic or relevant engineer for safe use, and undergo any approvals needed by law for use on public roads. You must read the disclaimer here before purchasing any item or using the information on this website.
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