XJ750 Seca Lift

Hi guys

I'm building my Seca to take offroading. I mean as in adventure bikes not motocross.

One thing I want to do is to lift the rear end of the bike to get a bit more clearance and push the weight up and forward.

Does anyone have any info about how high I can go without putting too much stress on the shaft UJ and also avoid instability issues. I don't want to go super high otherwise I wouldn't be able to reach the ground (!) but I was hoping to get about a 2 to 3" lift just using longer shockies.

I may also lift the front a bit to match too but I guess I need longer fork tubes for that. Ideally something that'll go straight into the Seca fork legs. Any ideas if any other tubes will fit. I don't want to change out the front end.

Any info or opinions much appreciated.

 

I think 2.5 inches lower will cause U-Joint issues. Logic would then say that 2.5 inches higher will cause issues as well...

No idea on the forks, but I know there are places that make custom length upper tubes....

 

A 13 inch Harley air shock will almost Max out your swingarm travel, my swing arm would only drop a 1/4 inch lower then the shock mount point. Also.. Avon disanzia works well on the front, but wears out fast on the rear. Try to stay with bias ply tires, this will limit the high speed shakes.

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An oil cooler is a very important upgrade for these air cooled bikes
Especially when doing low speed offroading.

Going to a 13" shock does get you more ground clearance, try them before you spend a fortune on fork tube uppers, that being said I'm thinking about that but finances won't permit that just yet. I still have a few other hickups to iron out.

The only real disadvantages the 650/750 seca's have in off roaring is that 1st gear is a bit tall (still works ok, with all the low end torque these bikes have). And weight. At 5-600lbs
they can get stuck in soft ground where as a lighter enduring would float across.
a winch hook-up on the front and rear may be an option if welding/Fab is possible.

I only off-road 3-5 times a year, I do cover a fair number of gravel roads.. but that can be done on any street bike. The knobbies help alot with braking.