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Discussion Starter · #1 ·
hi guys im chasing some technical know how on widening, i want to make the ktm between
48"-50" wide what i would like to know is what effect do different products have i.e you can spend thousands on longer a arms and wider axles but why not

-use spaces
-use offset rims
-use widening kits (they use stock a arms and build out from the chasis mounting points)
-use wider hubs

i know stock items may be weaker to aftermarket jobs but what is the problem with the above mentioned ideas, apart from strength they should still do that same job yeah, love to here your opinions and reccomendations for products
 

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what type of riding?

If it is going to leave the ground, I would personally never use spacers / wider hubs. I'm not a fan of the widening kits either, but that is really just my own opinion.

Another factor to be considered when evaluating flipped rims and spacers, or other 'economical' widening solutios is bump steer. You can ruin a 'ride' easily with those approachs.
 

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Discussion Starter · #4 ·
ktm offers a +2" mx a-arm kit, see attached picture. with the stock 4+1 offset wheels that kit would make the quad 49.2" wide.

part#: 8306100004430

ive actually ordered these arms but thier 3 months away and im looking for an intrim solution however i dont wanna snap an axle or break anything. by the way ill be racing equal parts mx and enduro, i know the opinions of cheap widening isn;t favoured but i am just wanting some info as to why theyre bad, i beleive in doing a job properly hence why i got the arms comming just wanted to know some info about it all.
 

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Why cheap widening is not so good. Well, about spacers for the front, for example, they increase the unsprung weight so, the efficiency of the suspension will lower...
 

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^^agreed.

and

cheap widening = bump steer = rider fatigue = slow rider. and, I just don't advocate jumping with 'improvised' parts in the mix. I'd rather jump a stock bike any day than a bike with spacers or other junk like that. If it's worth doing, it's worth doing right. These parts are engineered with such precision, I just don't agree with operating components outside the limits by which they were made.
 

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ive actually ordered these arms but thier 3 months away and im looking for an intrim solution however i dont wanna snap an axle or break anything. by the way ill be racing equal parts mx and enduro, i know the opinions of cheap widening isn;t favoured but i am just wanting some info as to why theyre bad, i beleive in doing a job properly hence why i got the arms comming just wanted to know some info about it all.
i would check around, some of the dealers i have talked to recently have these in stock and ready to ship. i dont know if they still have them, but it is worth a call. pm me and i will send you recommendations of who to contact.
 

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Just a suggestion but contact Dave @ JD Performance. www.jdperformanceatv.com and he may be able to help you. I know that he makes the best of the best in suspension products and if he has not done the KTM yet he will need a set of stock arms to base his jig on. Dave used to be the builder for Laegers on the 250R frames and suspension, left to start his own business and now his products are in very high demand.
 

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Just a note here guy's, Neil at ATV Racing in Phx. Az. has +2 +1 each side a-Arms made up and ready to go with tie rods and brake lines.
Have a set on our 525, 2 desert races so far, no failures, working great!
Stock shocks will work up to about 170lbs, may need stiffer springs after that.
Contact Neil at 623-516-8640
[email protected]
 
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