Gen-Mar Riser Installation on GPZ-1100

Installation of the Gen-Mar Risers was simple, with one hitch (brake line length).

Normal Installation

Here’s how it should go if you don’t have the brake line length problem:


The risers consist of:

  • Black machined aluminum outer pieces.
  • Machined aluminum inner tubes.
  • Longer replacement screws for bars.
Snip the nylon cable tie holding the upper front brake line tightly against the right fork tube.
With a fine screwdriver, pop the plastic caps out of the tops of the four handle bar mounting screws. Keep the caps.
With 6mm hex wrench (not supplied), loosen but don’t remove the screws that clamp the front brake reservoir to the right bar. Don’t open or remove the reservoir, just make it loose on the bar.

With the 6mm hex wrench, remove all 4 bolts holding the handle bars in place.

In this photo, the left bar’s bolts have already been removed and the bar is hanging by the clutch cable. Note that the fork tube protrudes from the base, and fits into a recess in the bottom of the bar plate.


Put one riser in place. The internal aluminum tube acts as an extension of the fork tube, protruding from the top of the riser to fit in the recess under the bar plate, just like the fork tube used to.

Tighten the set screws securing the internal aluminum tube.


Put the bar back on top of the riser. Make sure the aluminum tube extension fits in the recess. Square up the fit and then fasten with the long replacement bolts.

Repeat with the other riser.

Replace the plastic caps over the hex-head screws.

Replace the snipped nylon cable tie on the front brake line and tighten the fluid reservoir clamps.

Brake Line Problem

Most GPZers I spoke to said they had enough slack in the front brake line to allow for the 3/4 inch rise. A few commented that the result was a “rather tight” front brake line that they decided they could live with. A few commented that they had to let the brake lever sit lower on the bar, and that they were able to get used to this.

My line was way too tight, and one or two others reported feeling the same way. My brake line would have had to be tightened like a guitar string and that made me nervous.

Solution: replace the upper length of front brake line with a piece one inch longer. I took this opportunity to change the (entire) front brake line to steel braided, adding one inch of length at the same time.(I had this done at the shop, so don’t have photos. ¬†At that time, changing a brake line was beyond what I was comfortable doing myself.)

After this, the above installation proceeded effortlessly.

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