Suzuki GSX-R Motorcycle Forums Gixxer.com banner

1 - 8 of 8 Posts

·
Registered
Joined
·
20 Posts
Discussion Starter #1
Will they bolt right up? Will my stock calipers work on the 88 rotors?If anybody has done this please let me know the easiest and best way. Im also wondering how much my speedo will be off going to the 17 inch wheels? Thank you!
 

·
Banned
Joined
·
3,509 Posts
First of all...Welcome to gixxer.com


Here are the vitals of your rear wheel
1986-87 1100... 18x4.0", 5-bolt, 8.675"(220mm)disc

front wheel
1986 1100... 18x2.75", 15mm axle, 12.2"(310mm)disc

And you want '88 750 wheels which are 17", because '88 1100 wheels are 18" too.

'88 750 rear wheel
1988-89 750... 17x4.5", 5-bolt, 9.5"(240mm)disc

'88 750 front wheel
1988-89 750... 17x3.5", 20mm axle, 12.2" (310mm)disc

so...here's what you do.

put the '86 rear disc on the '88 rear wheel and you're fine.

For the front wheel you're going to need to change the bearings in the '88 wheel. Check with your local shop for a bearing from the Tucker-Rocky catalogue for a match. Or try these guys... CBR Bearing or try Motion Industries

If you can measure the outer diameter of the '88 front bearing (OD in millimeters) and then the width in mm, you know the inner diameter (ID) you want is 15mm.

Otherwise you need a complete front end from any gixxer 750 from 88 to 94 to match that 20mm ID of the bearing of the front wheel.

Bearings are cheaper.

The diameter of the front discs are the same so your fine there.
 

·
Registered
Joined
·
20 Posts
Discussion Starter #3
Originally posted by Simon Orttan:
First of all...Welcome to gixxer.com


Here are the vitals of your rear wheel
1986-87 1100... 18x4.0", 5-bolt, 8.675"(220mm)disc

front wheel
1986 1100... 18x2.75", 15mm axle, 12.2"(310mm)disc

And you want '88 750 wheels which are 17", because '88 1100 wheels are 18" too.

'88 750 rear wheel
1988-89 750... 17x4.5", 5-bolt, 9.5"(240mm)disc

'88 750 front wheel
1988-89 750... 17x3.5", 20mm axle, 12.2" (310mm)disc

so...here's what you do.

put the '86 rear disc on the '88 rear wheel and you're fine.

For the front wheel you're going to need to change the bearings in the '88 wheel. Check with your local shop for a bearing from the Tucker-Rocky catalogue for a match. Or try these guys... CBR Bearing or try Motion Industries

If you can measure the outer diameter of the '88 front bearing (OD in millimeters) and then the width in mm, you know the inner diameter (ID) you want is 15mm.

Otherwise you need a complete front end from any gixxer 750 from 88 to 94 to match that 20mm ID of the bearing of the front wheel.

Bearings are cheaper.

The diameter of the front discs are the same so your fine there.
<font size="2" face="Verdana, Arial">
 

·
Registered
Joined
·
20 Posts
Discussion Starter #4
Simon< Thank You For the Info! I cant wait to get them on the bike. Ive got a bunch of work done to the motor. 150 rwh. I just cant find a real good 18 inch tire. Thanks again Simon!!
 

·
Banned
Joined
·
3,509 Posts
You're welcome...oh, and your speed will be off just a little.

If it is indicating 60mph...your actual speed will be roughly 58 or so.

Someone did the math based on the % difference from an 18" to a 17" and it wasn't much...and it helps keep the police off your back.
 

·
YAAFM Mod
Joined
·
3,016 Posts
You are better off going to the 89-92 rear wheel as they are 5.5in wide. you also want the rear brake caliper carrier do to the different rotor size.
Bones
 

·
Registered
Joined
·
461 Posts
Originally posted by Simon Orttan:
For the front wheel you're going to need to change the bearings in the '88 wheel.
<font size="2" face="Verdana, Arial">teh outside diameter is 47mm(if I recall), and the inside is a 15 for the 86 year only.
I had bearing shops look for a 15/47 bearing and nobody makes them.
the only option I found were to:
1. get spacers made to fill the gap.
2. get a 87(17mm axle), or 88(20mm axle, bith 750 and 1100) front forks, and axle.
3. get a set of USD forks and brakes from a 1990+ model.

I chose option 3, and it made it a whole different bike. siz piston brakes(you need rotors from an 88-95 750 or an 89-98 1100), USD forks, and new triple clamps.
 

·
Premium Member
Joined
·
372 Posts
i had a sleeve made to make up the diff., but the speedo drive had to be machined 2mm thinner to line up the brake rotors properly. ive now switch to a 92 usd front so i could let that stuff go if you need it.
 
1 - 8 of 8 Posts
Top