1982 Suzuki GS1100S Katana Kat 1135R

Frame:
Fully Braced & Tig-welded 1” Chromoly Tubing with 3/16” thick steel gussets. Adjustable positive steering stops with urethane bumpers with steering head mounted Ohins Damper. Upper rear shock mouthing studs replaced with female threads with custom machined end caps. Custom designed frame mounted rear exhaust hanger system. New side stand was designed & fabricated with 1” Chromoly Tubing running tight against the frame. New foot rest mounting brackets fabricated & re-positioned 1.5” lower. Two 3/8″ stainless steel rear frame grip handles added for handling & strapping the bike down. The frame was sand blasted and powder coated. Total weight of our fully braced frame almost identical to the stock frame weighing in at 44 lbs.

Swing-Arm:
Original period Calfab GS1100 Arm was modified, machined, braced and powder coated with custom CNC’ed billet chain adjusters.

Engine:
1981 GS1100E 4-Valve Engine fully built & bored to 1134cc with Wiseco Pistons. Planed head is race ported with new radial ground oversized stainless steel valves with new shortened guides, seals & APE valve springs. Cams are V&H Racing Grind. Rebuilt & welded Crank by Gardner Racing Cranks, new Falicon straight cut gear, new crank & rod bearings & larger 29mm left end taper. APE billet clutch basket with new Falicon Straight cut gear with H.D. backing plate. APE hardened case & cylinder studs, head nuts, cam chain guide, clutch basket nut, manual cam chain tensioner, slotted cam sprockets & Tsubaki cam chain. New OEM clutch plates, oil pump, high volume gears & KBR Racing Top End Oiler Kit. Full race cut transmission gears with APE H.D. bearings. Oversized 16 row Earls oil cooler with custom mounting bracket, hard bent aluminum lines feed the oil cooler from the top running down alongside the frame tubes. A 30 PSI liquid filled oil pressure gauge added to the right engine side. Under seat mounted custom breather tank with KN Filter. Drive sprocket cover is custom CNC’ed. Full restoration made to the vapor blasted Mikuni VM33 Smooth Bore Carbs with new K&N High Flow Air Filters. Custom Moto GP Werks Stainless Race Exhaust (with Bosch O2 sensor) with custom CNC’ed aluminum exhaust flanges. Dyna 2000 Ignition system with Dyna Hi-output coils. New stator & custom gear position sensor also installed. The result after jetting and dyno tuning and break-in is 145 H.P with 80 lbs/Ft of Torque at the rear wheel.

Suspension & Rear Sets:
Fully built 92 GSXR-750 41 mm inverted front forks with new Ohlin’s SU145 Rear Shocks with custom lower off-set clevis. Honda CBR954 triple clamp with custom CNC’ed 1” drop Top Clamp with fully adjustable Apex clip-ons with 3” risers. New rubber mounted rear sets from a 2008 Hayabusa powder coated in black. Engine mounting brackets are custom CNC’ed. Custom CNC’ed front fork brace was added for eye candy along with the 30 + Titanium bolts.

Brakes:
92 GSXR750 front brake calipers & front master cylinder. Rear brake master cylinder is new 2008 Hayabusa with a custom designed rear master reservoir. 94 GSXR-1100 rear brake caliper & hanger bracket. New Arashi wave type rotors, floating front 310mm & fixed rear 240 mm.

Body Work, Seat & Head Light Assembly:
Original body work with welded plastic blocked off signal light holes. 2008 GSXR-1000 front fender with custom mounting brackets. New rear LED Tail/Signal Light Assembly is aftermarket from Japan with a custom rear sub-frame supporting the tail light along & custom license plate mounting bracket. The Fuel tank is original and was professionally lined with a new Suzuki OEM fuel tank cap. Heat reflective insulation added to the bottom side of the tank. The head light assembly was fully restored with new plating. New LED Fan cooled dual beam head light was installed. The seat cover is custom made from simulated carbon fiber in black and silver and professionally installed. The final touch was a custom Wes Cooley inspired paint scheme in Richard Petty Blue and Artic White. The 82 GS1000S Katana Shark Fins are new Suzuki OEM accessories.

Wheels:
94 GSXR-1100 stripped down and powder coated with new Dunlop Q3+ tires (120/70-ZR17 & 180/55-ZR17). Front drive sprocket is custom CNC’ed with a custom Offset. The rear sprocket is a Super-Sprox Stealth sprocket with gold anodizing. The rear sprocket carrier was custom machine with a new EK ZVX2-530 gold anodized chain was used to match the rear sprocket.

Electrical:
Green back-lit LCD Cluster 0-299 KPH with Gear Position read out, 14,500 RPM Tachometer with 10,000 RPM activated Shift Light. Custom designed mounting bracket for Cluster, Digital O2 Display & Digital Oil Temp Gauge. Custom wiring harness with custom RFID Ignition Switch circuit which is Key-fob activated. A programmable 6 circuit Rowe-Electronics Digital Fuse Block. Low power LED lighting, Shorai Lithium Ion Battery with a Scorpio 2 way F.M. pager alarm system and 3-Phase Compu-Fire Voltage Regulator. All of the main electrical components are mounted under the seat in a custom fabricated aluminum tray with all wiring neatly tucked away. All relays are sealed with all wires running though vinyl conduit. The Dyna 2000 also provides the digital Tach Input. Under Seat mounted USB Accessory Charger.

Performance:
With 145 H.P. at the rear wheel & with the extended wheel base, it’s a rocket ship with incredible acceleration. The 180 rear really hooks up and allows for power wheelies under hard acceleration. It’s comfortable to ride, handles great and stops on a dime and is such a blast to ride. This was my 1st build, # 2 is almost finished and # 3 is in the planning stages, just having a great time! Thanks and please check out our site: vsbmoto.com or vintagesuperbikes.com

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