As Suzuki's fastest production motorcycle, the Hayabusa GSX-1300R relies on a streamlined fairing to cut through the wind. While the sweeping bodywork is as attractive as it is functional, the appearance of the Hayabusa's rear end is marred by its large plastic rear fender. Several manufacturers now offer an undertail kit to remove the fender and close off the empty space beneath the tail fairing. As an added bonus, many undertail kits incorporate integrated turn signals to complete the bike's aerodynamics and look great from any angle. Installation is fairly easy and can be completed in less than an hour.
Things You'll Need
- 4-mm Allen wrench
- Socket wrench
- 12-mm socket
- Rotary tool
- Cut-off wheel
Remove the passenger seat, using the seat latch under the left side of the tail fairing. Lift up the cushion at the front of the rider's seat, unscrew both of the seat mounting bolts with a 4-mm Allen wrench and remove the seat from the rails. Remove the passenger grab rail from the rear frame, using a socket wrench and a 12-mm socket.
Unscrew the tail fairing bolts with a 4-mm Allen wrench. Two of the bolts are located inside the compartment below the passenger seat. The remaining two bolts are on the front of the tail fairing, below the base of the gas tank. Pull the plastic pop rivets out from the bottom of the tail fairing.
Gently slide the tail fairing away from the gas tank. Reach under the fairing and unplug the turn signals and the tail light from the motorcycle wiring harness. Pull the tail fairing off of the rear frame completely. At this point, only the lower tray and rear fender will be attached to the rear frame.
Cut the rear fender off of the lower tray, using a rotary tool and a cut-off wheel. Cut the fender flush with the bottom of the tray to provide ample room for the new undertail to fit into place.
Slide the tail fairing over the rear frame and the lower tray. Slip the new undertail between the tail fairing and the rear frame rails. Pull the undertail turn signal connectors around the frame rail and plug them into the wiring harness. Reconnect the tail light to harness.
Press the plastic pop rivets through the tail fairing, the undertail and into the frame rails. Screw the tail fairing mounting bolts into place using a 4-mm Allen wrench.
Install the rider's seat onto the motorcycle, using a 4-mm Allen wrench. Mount the passenger grab handle onto the rear frame, using a socket wrench and a 12-mm socket. Lock the passenger seat into place.
- "The Professional Motorcycle Repair Program"; Professional Career Development Institute; 1995
- "Suzuki GSX-1300R Hayabusa Service Manual"; Suzuki Motor Corp.; 2006
- "GP Undertail Installation Instructions: GSX-1300R Hayabusa 1999-2004"; 58Cycle, Inc.; 2005
- "Installation Guide: Suzuki Hayabusa Undertail"; Bestem USA; 2006
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