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GSXR 1216 STREETFIGHTER PROJECT 1

GSXR 1100 subframe chopped.

1 of 2 GSXR projects, we’re building concurrently. Both will share the same subframe set-up, but will differ in terms of running gear and swing-arms.

MAKE / MODEL

1990 SUZUKI GSXR1100

MECHANICAL

WISECO 1216 PISTONS
MIKUNI FLATSLIDE CARBURATORS
GAS FLOWED & PORTED
MTC LOCK-UP CLUTCH
KENT HIGH LIFT CAMS
DYNA 2000 IGNITION

BODY

REDSIX CNC SWINGARM
REDSIX BESPOKE SUBFRAME
REDSIX BILLET YOKES
REDSIX ENGINE COVERS
OHLINS REAR SHOCK
ISR CALIPERS
ISR MASTER CYLINDERS
GALFER DISCS
MOTOGADGET

©2015 COPYRIGHT REDSIX® ALL RIGHTS RESERVED
  • PROJECT START:APRIL 2015
  • STYLE:STREETFIGHTER
  • BUDGET:N/A
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DESIGN INTENT

GSXR 1216 streetfighter project A, One of two GSXR streetfighter projects being built simultaneously, with the aim to bring the mighty undestructable GSXR 1100 bang up to date! Both bikes must put out at least 150bhp at the rear (not a difficult task with 1216 bores and the right carbs, and few more little tweaks of course). All components we build for our projects will be available in our store.

Overview

So… Two GSXR 1216 projects simultaneously? Why Not? These two motorcycles will be the stage for launching our first products, and indeed the company. They are bikes we love, not only because they are strong, fast and bulletproof, but also because they are oil cooled, which allows the bikes to look like real motorcycles should.

But modern running gear, and tweaking out the potential power is the priority for these two bikes. Closely followed with a good trimming of the fat… streetfighter style, this is a late 80’s early 90’s brute, and will remain so! Therefore no cafe racer styling here, this will be streetfighter all the way, and despite the misconception that a streetfighter has to be crashed motorcycle with its fairings removed, we can assure you its not… they are simply custom race bikes.

What follows here, is our perception of what can be…

Mechanical

Wiseco 1216 pistons will replace the originals, The head will be gas flowed and ported, together with Kent stage one high lift cams timed via a Dyna 2000 ignition.

The engine will be stripped down entirely, and checked thoroughly, all bearings and O-rings will be replaced etc. Then painted with the appropriate satin black heat resistant paint before its treated to a full set of goodridge hoses and stainless fasteners throughout.

38mm Mikuni Flatslide Carbs with K&N filters will then fuel the fire exhaled through the coveted stainless Micron exhaust.

Fabrication

The mainframe will undergo the good old chopped subframe, and replaced with tig welded tabs to accomodate the CNC’d subframe members.

The swingarm members will of course be tig welded also, but other than that fabrication will be kept to a minimum for this particular project.

Components

The biggest and probably the most difficult item to design and machine, will be the subframe, integrating rear light unit and removable passenger seat cover.

The swingarm will also be machined, with reverse pocketing, structured bracing, stress analysed and tig welded. As the bike will be running a GSXR 1000 rear wheel and a GSXR 1100 Öhlins® set-up, custom was the best option.

All cases/covers will be replaced with our own designs, with thicker stronger covers, and cleaner sharper lines, the clutch cover will be designed to accomodate an MTC Engineering’s lock-up clutch.

Our adjustable rearsets will also be configured for the GSXR 1100, along with an adjustable sidestand and quick release petrol cap for good measure.

The front end will see a set of our slotted yokes to take a pair of GSXR 1000 front forks, together with our streetfighter headlight unit.

THE BUILD

  • 15 | New Battery Box
    Custom Battery Box completed.
    15 | New Battery Box
  • 14 | New wiring loom started
    Brand New Loom being started from scratch.
    14 | New wiring loom started
  • 13 | Sub-Frame Fit
    Sub-Frame fitting perfectly.
    13 | Sub-Frame Fit
  • 12 | Tabs tig-welded in place
    Tabs Tig-Welded by our friends at SPEIGHT ENGINEERING.
    12 | Tabs welded in place
  • 11 | Tabs tig-welded in place
    Tabs Tig-Welded by our friends at SPEIGHT ENGINEERING.
    11 | Tabs Welded in place
  • 10 | Frame Tabs Made
    Tabs made to accommodate sub-frame offsets.
    10 | Frame tabs made
  • GSXR Starter Cover Design stage 1.
    GSXR Starter Cover Design stage 1.
    09 | GSXR STARTER COVER
  • GSXR 1216 Engine painted and rebuilt.
    GSXR 1216 Engine Painted and Rebuilt.
    08 | ENGINE RE-BUILT
  • GSXR Timing Cover design stage 1.
    GSXR Timing Case/Cover design first stage.
    07 | TIMING COVER DESIGN
  • Engine stripped, ready for inspection and rebuild.
    Engine stripped down, ready for inspection and rebuild.
    06 | GSXR 1100 ENGINE STRIPPED
  • Finishing the surface prior to powder coating.
    Flattening the finish prior to powder coating.
    05 | FINISHING PRIOR TO POWDER COATING
  • Frame weld cleaned up.
    Weld cleaned up.
    04 | CLEANING UP THE WELD
  • Frame plate holes filled with Tig.
    Frame plate holes filled with Tig.
    03 | PLATE HOLES FILLED
  • Frame casting surface removed.
    Casting removed from headstock..
    02 | HEADSTOCK CASTING REMOVED
  • GSXR 1100 subframe chopped.
    GSXR 1100 L Frame aquired, Removed subframe.
    01 | FRAME CLEAN-UP