Rear rack spacer/bolt sizes?

Gonna try my hand at a home brewed rear rack today. Anyone able to tell me what size spacers and bolts I need to use the four hole mounting option. For length wise I would like the rack to sit as similar as possible to the Pro Moto Billet. I appreciate any help.

Hey 82 ...

For my rear rack ... as seen in the thread below ...

https://wr250rforum.forumotion.com/oh-those-sweet-mods-f5/another-wr250r-rear-rack-designed-with-options-t2222.htm

The spacers used in the pictures in the thread above were all 2" ... shorter spacers as noted below are now installed.

The plate is approx. 1/4" thick
Spacers are 1.9" and 1.82" --- with the shorter ones in the rear (spacers are 5/8" od and 5/16" id)

I bought M6 X 1 X 70 stainless socket cap screws ... flathead as they are countersunk into the Alum.

Thanks GSVS,
I appreciate the reply. Do you have a pic with the shorter standoffs installed. I think i may go shorter still based on the picture with the 2"ers. That thing is in stilts!

I will post them in the morning ...

mcwbyu82 wrote:

Thanks GSVS,
I appreciate the reply. Do you have a pic with the shorter standoffs installed. I think i may go shorter still based on the picture with the 2"ers. That thing is in stilts!

I used 1/4-20 X 2.5" flathead bolts, nylon standoffs, 1/2 OD X 1/4 ID X 1.5 " to hold a doubled 16 gage sheet metal plate, spot welded along the edges, then painted. Nylock nuts underneath in three places. Feels solid as a rock. There's about 1/2" of clearance underneath so I welded some short posts under the plate to hook bungies onto or to wrap straps around. I put some 1.5" holes in it to remove some of the weight. The holes are also handy for bungie hooks. Cost about $25. Time will tell if the nylon creeps under load.

pics: http://cid-627016e09605a681.photos.live.com/browse.aspx/Web%20photos/low%20res

mcwbyu82 wrote:

Thanks GSVS,
I appreciate the reply. Do you have a pic with the shorter standoffs installed. I think i may go shorter still based on the picture with the 2"ers. That thing is in stilts!

Here you go ...
As you mentioned ... the spacers could be a tad bit shorter yet ... but this rack has the RotoPax mounting holes so some space is needed to slip the nuts on the underside.


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