What is the easiest sport bike front and rear end swap? w/o mono

[Guest]

would like to put a CBR F2 front and rear and on a GS1100E. has anyone done this b4? what are some other easy options?

[isleoman]

Most take the bandit rear, GSXR1100 (93-95) front route (See below). Some do the GSXR1100 front with the Honda 954 stepped top triple to address the reduced height.

The bandit rear spindles can be found from Katman you'll have to weld them on and grind off the mono attach point.. There are many documented builds on GSR and OldskoolSuzuki.

Expect to spend a lot and have it not be worth nearly what you put into it. Not saying don't do it. Just saying go in with eyes wide open in terms of your budget, objectives and personal skills. If you're totally sucessful you'll have an 80's bike that handles like a 90's bike and likely won't be worth as much as a pristine stock bike.

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[Rob S.]

Expect to spend a lot and have it not be worth nearly what you put into it. Not saying don't do it. Just saying go in with eyes wide open in terms of your budget, objectives and personal skills. If you're totally sucessful you'll have an 80's bike that handles like a 90's bike and likely won't be worth as much as a pristine stock bike.

Exactly. Not money well spent.

[Chuck78]

Swap the front, but do it well and get the geometry right - custom triples or 17" cbr wheels and steepened rake via taller rear shocks.

there is an infinite amount of ways to totally screw up the suspension geometry and ride height when converting to a mono shock. It needs to be a very well engineered retrofit.
just stick a good swing arm on there and a very good quality set of twin shocks and you will be much further ahead. Probably better handling as well unless you have an unlimited budget for a high end mono shock,and very good design plan as far as geometry with the rear end.


if you are looking at a CBR 600 f2 front end, make sure you only get the last year they were available. It is a cartridge fork, the same as the f3. All of the other F2 models were damper rod forks. The F3 type is a pretty good fork, and in a good height to not lose much ground clearance on a vintage bike. In order to use the triple and not have heavy as a semi truck steering, you need to swap to 17 inch wheels and match the rake of the donor bike by installing substantially longer rear shocks, or by losing precious ground clearance and dropping the front as well. Custom triples are a much better bet, raise the rear 1 inch max and then ad more offset to the triple of to compensate so that your trail is in a sporty quick turning range. You can also run stock GS wheels with a custom triple and Honda forks that run 296mm rotors, just need to adapt to the axle size with help of a machinist.

[Chuck78]

Cbr600f4 forks, 93+ VMAX 1200 43MM triples, stock GS wheel with larger bearings and spacer and speedo drive is a great swap as well. 01-02 gsxr1000 calipers.

Superhawk vtr1000f forks, cbr600f4i brakes and mc, honda pc800 triples and axle, modify the steering stops, adapt gs wheels to the 20mm axle or adapt the gs axle to the forks. Pc800 triples have 55mm offset, and take 41mm forks with room to run the powerful 4 and 6 piston opposed piston calipers. The offset allows you to run stock 18 and 19" front wheels while still retaining quick steering.

a modern front end swap without dropping to 17 inch wheels and substantially taller rear shocks or substantially shorter ground clearance robbing front end, the above will just lead to a large amount of trail and a very slow heavy steering bike with modern damping and brakes. custom billet triples in a properly calculated offset will cure everything if done right.

just keep that in mind that your steering will not be very good unless you steepen the rake quite a lot from stock and run 17 inch wheels. The donor bike triple is made for the donor bikes rake angle and front tire diameter. None other.

$425+ billet custom offset triples cure all.