WR250R Acerbis Spider Evolution Front Disc Guard install How-to!

[vwsandman]

Remove all Advertisements

As we all know there is not alot of options for front disc guards for the WR250R, I liked the way the Acerbis Spider Evolution front disc guard looked, but after some back and forth email with Acerbis, I confirmed that there was no disc guard made for the WR250R and that there were no plans to make any for this bike....bummer, same old story right? Wrong!

Here is what I did, I bought the adapter mount (Acerbis part#2043190059) that fits all modern YZF WRF 250/450 Yamaha dirt bikes, indeed this does not fit our bike as the front axle on a WR250R is a much smaller diameter than what must be used on those machines. The width is correct, but not the OD nor the ID. The Acerbis disc guard mounts to the bike by replacing the left side axle spacer using a machine specific adapter. Since the stock Acerbis mount has the bike specific part press fit in the center, I took it to work and talked it over with a CNC programmer/machinist friend. We both agreed that the center could be pressed out and a new WR250R specific part could then be turned and used instead. So figuring "what the heck" I went to the arbor press and sure enough out popped the center! Cool! I took the parts (stock WR250R left axle spacer, old Acerbis spacer and Acerbis disc mount) back to my friend and in about a weeks time, Viola! He had made the perfect adapter made out of aluminum, just like the Acerbis part! Here are some pics of the parts and how it looks installed on the bike:

Here are the four parts, the stock WR250R axle spacer, the new part my friend made, and the Stock Acerbis axle spacer and disc guard mount:



Here they are from the side:



Here is the Acerbis guard with the new center part we made:




Here is the disc guard bolted to the center section:




Here is the complete unit on the wheel before the front axle is installed:




Here is the gap between the disc and the guard, looks good!:



And some pic of the guard on the bike:







I am using the WR250X front fork guards as I feel that they are better than the R quards as they do not flex as much, they also allow me to make my wheel swap to my X wheels easier. Now for the bad news: WR250X owners, this WILL NOT FIT YOUR MACHINE! The X disc is just too big! Want soem more good news? OK, here goes, you can shop around and buy this disc guard for around $28 for each piece or less, the outer unit is replacable in case of damage, you can choose your choice of colors for the outer disc guard, and my friend and I can make more adapters so we can all add this guard! We have to talk over the details for costs, so if there is enough interest from you guys, we should be able to make this happen! Let me know what questions you have and I will be glad to answer them as best as I can.

What do you guys think?

[D1EHARD]

Very Nice. Love the look.

Wish it would fix the X, I'd be all over it.

[blueshopsuper]

Originally Posted by vwsandman

What do you guys think?

What do I think? Why pay you to do something I could do myself on the lathe. Looks great! I won't be buying one but I will give you more gas. Good job.

I guess I need to spread gas around before giving you some more.

[Gargoyle]

Originally Posted by vwsandman

What do you guys think?

I think ... WOW! That's a pretty cool looking guard.

I am still not sure if adding a guard will help or hurt given the muddy, sticky, rooty, rocky conditions I usually find myself in here in the northeast.

So, I am on the fence for my bike ... but think that your setup looks first class!

[eljaye925]

Looks like a better design the the GYTR guard.

[yoshie]

I have been looking for long time for a disc guard ,PLEASE let me know
Iwill buy one in blue.Thanks I have wr250r 2008

[vwsandman]

Originally Posted by yoshie

I have been looking for long time for a disc guard ,PLEASE let me know
Iwill buy one in blue.Thanks I have wr250r 2008

Just shop around online for the best price you can find for the Plastic disc guard in the color you like (there are many to choose from) and buy the center mount using the part number I posted up above, I will see if me friend at work can womp up (technical term) some more adapters and then you can get one from me and go from there...

[mwakey]

Very nice Sandman! You do good work.

Gas for your efforts....

edit: just found out I can't give you more gas. Little window pops up and says I need to "spread the love" before you get more from me. Sorry.

[vwsandman]

Originally Posted by mwakey

Very nice Sandman! You do good work.

Thanks! I always try to do things as OEM as possible....I like stuff that bolts on/bolts off with no modifications to the bike, plugs in to factory connectors, ect....I guess it is my form of OCD...

Takes longer/costs more, but IMHO a better quality product in the end....

[yoshie]

Thanks,just let me know when spacer will be ready,I will take one,
Thanks again