#100 SR400Custom Report
A bolt-on hardtail SR400 bobber. We created a clean line similar to a rigid frame by making a one-off rear frame and modifying the seat rail.
We added a bit of British car taste to each part and finished it with a good atmosphere with a moderate amount of aging processing. The rear section can be detached and the swing arm can be attached, so you can clear the inspection without worry. It’s a vintage style based on SR, which is light, easy to handle, has few breakdowns, and is fun to ride.
[Detailed introduction video with the owner is here] (After some customization)


Custom List
FrontHandlebars, F forks, headlights, etc.
【Front Wheel】
“Front 19-inch Kit for SR400/500 Disc Brake”
◯With the “Front 19-inch Kit”, you can achieve a classic look even with disc brakes.
【Front Fork】
〇A classical universal fork boots. The unnecessary stay of the bottom case has been smoothed and pearlite treated.
【Headlight】
◯ A cool headlight with a crest and lens cut.
【Handle/Handle Area】
◯The drag bar handle is lifted with a vintage Flanders dog bone riser.
〇A narrow flat handle with a short clamp section.
◯A top bridge that can clamp the handle 2cm lower than the original.
“Amal type throttle holder, general purpose (for 7/8″)”
◯Controls such as switches are simplified using small ones. It’s a standard menu of 2%ER.
“Amal type slot wire 1200mm ’88~’08”
【Switch】
“Mini Turn Signal Switch Coupler On Kit (’85~00)”
〇Easy to install mini turn signal switch with coupler on
〇It is bolted on to the less noticeable and easy-to-operate lower part of the stem.
“MOTOR ROCK Decompression lever”
A decompression lever directly attached to the engine to simplify the area around the handle. (The one on the vehicle is an old model)
【Front Blinker】
“Small Bullet Turn Signal Matte Black 4pcs SET General Purpose”
〇A classic among classics. A chopper-style blinker.
“SR400/500 Bottom Mount narrow blinker stay”
〇A stay to attach a 10mm blinker to the frame bottom.
【Speedometer】
“Mechanical Speedometer 60mm Black Panel 1:4”
〇Mounted on the less noticeable and highly visible left front side of the gasoline tank.
CenterTank, oil tank, seat, step, muffler etc.
【Muffler】
“One-off Pipe Manufacturing Exhaust Pipe Flange Set”
〇Use a convenient manufacturing kit for the root mouthpiece and create a one-off. The handling of the exhaust pipe is according to the owner’s preference. The silencer uses a racing megaphone with a punching mesh at the end.
【Step】
“Mid-High Control Parkerized for SR400/500”
〇This step kit is essential for 2%ER’s custom, which makes the riding posture cool and the position extremely less tiring.
【Seat】
◯The seat is a one-off Bates type. Despite being rigid, the angle of the seat attachment and the springs make it surprisingly comfortable to ride.
“Welding nut non-through M8 2p”
〇Used on the frame side as a seat spring receiver.
【Electrical】
◯ An electrical box made by modifying a BSA oil tank under the seat. All the electrical components of the high model year are consolidated in this box.
“IC blinker relay wide range specification”
〇 A wide-range turn signal relay that can handle 1-150 watts without any problem even with LED turn signals. It can also be used as a repro for the original relay.
〇 This is a battery-less kit that we manufacture in Japan.
【Gasoline Tank Installation】
◯ A peanut tank that has been slightly narrowed, using a gas cap for Triumph. This is a gas tank made in the style of the old WASSEL.
“Welding nut non-through M8 2p”
〇 Drill a hole in the gasoline tank body and weld it in. It’s non-penetrating, so it won’t leak. Used on both sides.
“Weld tab M size 4.5mm thickness 2p”
〇 Enlarge the hole diameter and change to a rubber mount specification to hold the non-penetrating nut. Used on both sides.
“Weld tab L size 4.5mm thick steel 2p”
〇 Used for the rear installation of the gas tank. This also has an enlarged hole diameter and is used with a rubber mount.
【Engine Area】
〇This is a filter kit needed when removing the original air cleaner.
【Drive System】
“Front sprocket SR400/500 428-19”
〇A durable replacement sprocket made of steel.
RearFenders, rear shocks, swingarms, etc.
【Hardtail】
『“Rigid Line” Bolt-On Hardtail Kit』(5cm Long)
〇As the name suggests, it’s a detachable hardtail kit using bolts/nuts. It remodels the seat rail of the original frame to a rigid line. You can revert to a swing arm/rear shock specification during vehicle inspection or when changing styles.
【Rear Wheel】
“16″ Kit Steel Spoke SR400/500 Rear”
〇This is a kit that gives a powerful look with the same size as a typical Harley. A, N, S rear tires.
“Drilled plate torque rod SR400/500”
〇This is a drilled design torque rod to avoid interference with the wider tires.
【Rear Fender】
“5-Inch Custom Rib Fender – Steel Material”
◯A durable rib fender with thickness. Mounted with a flat stay. Despite its simplicity, it is finished with a good atmosphere by using a minus bolt.
“Reinforcement Back Plate for 5-Inch Rib Fender”
〇We have added a reinforcement plate around the mounting hole to make it even more robust.
“Classical Minus Bolt Set – 6-Piece Set (Metric Standard)”
◯We used a minus screw for the mounting bolt and made it with a vintage atmosphere.
【Tail Lamp】
◯A replica tail lamp from the English Mirror Company for the side number. It is a replica of the tail lamp that was used in British bikes such as Triumph.
【Rear Blinker】
“Small Bullet Turn Signal Matte Black 4pcs SET General Purpose”
〇A classic among classics. A chopper-style blinker.
“Weld tab S size 4.5mm thick steel 2p”
〇Welded onto the hardtail. Used as a blinker base.
【Drive System】
“Rear sprocket SR400/500 428-56”
〇An affordable and durable replacement sprocket.
※Parts Reference may show similar products or products with additional processing.