#255 SR400Custom Report
This is a simple styling chopper style SR400 ordered with a vehicle brought in from Saitama Prefecture. The front fork extended by 7.5cm and the 13cm long hard tail give the vehicle a good size, with the specified front 21-inch wheel and each exterior part balanced well. The handle, seat, and step are set up as usual for a comfortable ride and less fatigue. Despite being a 2008 model with many harnesses/electrical components, the electrical components are neatly arranged at the rear of the crankcase for easy maintenance, and the USB power supply is conveniently located next to the meter where it is not conspicuous.
In particular, as a measure against the heat-prone and easily damaged engine of the 3rd model and later, the AIS is cancelled, and the small-diameter carburetor is replaced with an FCR, significantly improving the performance of the ride.
【The sample car based on the STD Hardtail Complete is here】
【Over 80 hardtail production examples are here】
【Detailed Explanation, Introduction Video】

【Driving Video】

Custom List
FrontHandlebars, F forks, headlights, etc.
●The front fork has been extended by 75mm to balance the overall structure. The wheel has been upgraded to 21 inches.
【Around the Front Fork】
“Front fork 7.5cm joint pair for SR400/500“
〇High-quality stainless steel fork joint.
【Front Wheel】
“SR400/500 21inch kit for front“
〇A wheel kit that results in a narrow, large-diameter, sharp style.
【Headlight】
〇A headlight that fits well with the SR’s vehicle size and fork width, and can be installed without any sense of discomfort.
〇A stainless light stay for bottom mount headlights that fits any style without any sense of discomfort.
【Handle/Handle Area】
〇A narrow flat handle with a short clamp section.
“PAUGHCO type 3inch Square Riser SR400/500“
〇A handle post of a very usable height, maintaining the atmosphere of the time.
“Amal type throttle holder, general purpose (for 7/8″)“
“Amal type slot wire 800mm ’88~’08“
〇The jockey shift eliminates the clutch lever, and the change to the Amal throttle makes it even simpler than usual. Long cables are used for each.
【Switch】
“Mini Turn Signal Switch Coupler On Kit (’85~00)”
〇A mini turn signal switch that is easy to install with a coupler on
(It is installed with modifications for different model years and small headlights)
〇It is newly installed by welding to the lower part of the stem, which is inconspicuous and easy to operate.
“MOTOR ROCK Decompression lever“
A decompression lever directly attached to the engine to simplify the area around the handle.
【Turn Signal】
『Small Bullet Turn Signal Chrome 4pcs SET General Purpose』
〇A classic among classics. A chopper-style turn signal.
『SR400/500 Bottom Mount narrow blinker stay』
〇A stay to attach a 10mm turn signal to the frame bottom.
【Speedometer】
“Mechanical Speedometer 60mm Black Panel 1:4“
〇Mounted on the left front side of the gasoline tank, where it is inconspicuous and highly visible.
CenterTank, oil tank, seat, step, muffler etc.
●The Narrow Sports Star Tank is securely mounted with three rubber points. The frame under the seat is rebuilt to match the angle of the rear “Hardtail Kit“, after cutting the original part and considering strength, precision, durability, and maintainability with thick steel pipes.
【Muffler】
〇An up-muffler that is slip-on mounted on a normal exhaust pipe.
【Step/Shift】
“Mid-High Jockey Shift Kit/Parkarize”
〇A jockey shift kit that maintains the comfortable riding posture of the mid-high step, with a focus on touch and stroke operation.
【Gasoline Tank Installation】
“Narrow Sportster Tank for Production”
“Welding nut non-through M8 2p“
〇Drill a hole in the gasoline tank body, insert and weld. 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 enlarges the hole diameter and uses it as a rubber mount.
【Seat】
“BATES Type Genuine Leather Solo Saddle Seat Vertical Tuck Roll Black/White“
〇A genuine leather solo saddle seat with a balance of price, looks, and comfort. It is installed with a soft ride that is hard to bottom out by changing the mounting angle and spring input position.
(Discontinued) ⇒Genuine Leather STD Solo Saddle Seat Black
“Solo Saddle Seat 2 Inch Spring Comfort Mount Set”
〇A mount kit that is easy to install on custom frames and the like. You can also change the lever ratio and create a good cushioning effect.
“BATES Type Genuine Leather Pillion Pad”
〇Installed not for tandem, but in a position to stop the weight of the upper body during acceleration. Long-distance driving becomes significantly easier.
(Discontinued) ⇒Genuine Leather STD Solo Saddle Seat/Pillion Pad Set
【Carburetor】
“FCR carburetor 39φ SR400/500 single unit“
〇Your slow SR will dramatically change. It’s a carburetor that’s easy to handle with sharp and smooth acceleration.
“Net funnel set for FCR carburetor“
〇This is a set of an aluminum funnel replacing the red plastic one, and a stainless steel trash prevention net.
〇This is a dedicated adapter to firmly fix the FCR carburetor to the SR400/500.
【Electrical Equipment】
“SR400/500 Custom Electrical Plate #2%er Original #SR400/500“
〇All electrical components except the CDI are consolidated at the rear of the engine crankcase. It is easily accessible from either side of the vehicle and has good maintainability. There is no need to reassemble even if you return to the swing arm specification during vehicle inspection.
“IC blinker relay wide range specification“
〇A wide-range turn signal relay that can be used without difficulty even with LED turn signals. It can also be used as a repro for the original relay.
“Battery Tray Kit for Hardtail” (Prototype, decided to be commercialized)
〇A tray kit for mounting batteries, which has been increasingly requested. It is also equipment for installing ETC after delivery.
【Engine Area】
〇A cancel plate made of stainless steel. It is possible to use it by sandwiching it without removing the AIS body.
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.
●We finished it with a 13cm long hardtail kit, a flat fender with reinforcements on the back, an old-school tail lamp, and a one-off sissy bar.
【Hardtail】
『“Rigid Line” Bolt-On Hardtail Kit』(13cm long, made-to-order)
〇As the name suggests, it’s a hardtail kit that can be attached and detached with bolts/nuts. It remodels the seat rail of the original frame to make it a rigid line. You can revert to a swing arm/rear shock specification when you need to pass an inspection or change the style.
【Rear Tire】
〇Vintage style, watermelon pattern classic tire
【Sissy Bar】
“One-off Corner Bar”
【Rear Fender】
“5-Inch Custom Rib Fender – Steel Material“
“Reinforcement Back Plate for 5-Inch Rib Fender“
〇A thick and durable rib fender. A reinforcement plate is added around the mounting hole to mount it even more robustly.
【Tail Lamp】
“Lucas tail lamp with pedestal Japanese standard number size“
○A Lucas tail lamp, a staple for choppers, compatible with Japanese standard number plates.
【Turn Signal】
“Small Bullet Turn Signal Chrome 4pcs SET General Purpose“
〇A classic among classics. A chopper-style turn signal.
“Weld tab S size 4.5mm thick steel 2p“
〇Welded onto the hardtail. Used as a base for the turn signal.
【Drive System】
『Rear sprocket SR400/500 428-56 』
〇An affordable and durable replacement sprocket.
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