#165 SR400Custom Report
This is a vehicle that was brought in already customized with an SR400, and we focused on hard-tailing the rear.
The owner, who is nearly 190cm tall, requested that we use as many of the custom parts that were attached at the time of delivery as possible, and “make the rear look cool with the ride comfort as the top priority.” Riding with two people was also a condition.
The SR400, which had a hard low-down on both the F fork and R shock in a cramped position that was too tight for the owner, and had a poor ride comfort on the seat, has been long hard-tailed around the rear, extending the wheelbase by 13cm, ensuring a relaxed position and a wide seating space.
We have made it much easier to ride compared to the state at the time of delivery, with the removal of the F fork’s low-down, the removal of the hard rear shock, a seat with a cushioning urethane, and a seat mount that has been thought out in terms of the angle of the spring and the direction of weight input.
The style is a classic bobber style, and we have put it together in a standard way with future customization in mind.
(This was the state when it was brought in)
〇 ” The process from order to meeting and production is here ”
〇 ” The process of making a sissy bar and the area around the tandem step is here ”
〇 ” The blog about completion and delivery is here ”
【Driving Video After Additional Customization】

【Introducing with the Owner After Additional Customization】

( Overall )

( Overall Left Side )

( Light Test Drive Video )

( Owner’s Impressions After the Test Drive )

Custom List
FrontHandlebars, F forks, headlights, etc.
【Front Fork】
◯ Prioritizing ride comfort, the front fork’s lowering has been removed. This allows for the SR’s original high cushioning performance.
【Front Wheel】
“SR400/500 21inch kit for front“
〇A wheel kit that results in a narrow, large-diameter, sharp style.
【Headlight】
“5.75 inch Bates Light Chrome General Purpose“
〇A headlight that fits well with the SR’s vehicle size and fork width, and can be installed without any discomfort.
〇A headlight stay that fits well with the chopper style due to its moderate height and protrusion. (5.75 inch Bates Light Set II SR400/SR500)
“5.75 inch headlight lens yellow [glass]“
【Handle/Handle Area】
◯The handle is set with a flat drag bar handle and a “4-inch Dog Bone Riser” (discontinued).
“Amal type throttle holder, general purpose (for 7/8″)“
◯The controls are the standard 2%ER clean treatment.
“MOTOR ROCK Decompression lever“
A decompression lever directly attached to the engine to simplify the area around the handle.
【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.
【Muffler】
“69 Megaphone Muffler Universal“
◯ The “69 Megaphone Muffler” that was installed at the time of delivery was used as is, and only the intermediate pipe that raises the end was custom-made.
【Step/Shift】
“Mid-High Jockey Shift Kit/Parkarize”
〇Maintaining the comfortable riding posture of the mid-high step, this is a jockey shift kit that focuses on operation feel such as touch and stroke. (The step bar and shift pedal of this vehicle are custom-made of brass)
【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 at a position that becomes a stopper for the upper body weight during acceleration. Long-distance driving becomes significantly easier.
(Discontinued) ⇒Genuine Leather STD Solo Saddle Seat/Pillion Pad Set
(The one installed on this vehicle is a custom-made product that is 5cm longer)
【Electrical Equipment】
〇An oil tank-like electrical box that can be attached to the original frame. The one that was brought in is being used with the mounting position changed.
“IC blinker relay wide range specification“
〇A wide-range turn signal relay that can handle 1-150 watts and can be used without difficulty with LED turn signals. It can also be used as a replacement for the original relay.
〇This is a battery-less kit that is made in Japan.
【Air Cleaner】
“Old Type Air Cleaner SR400/500“
【Kick Pedal】
◯A high-quality kick pedal with a chrome-plated steel arm and a milled aluminum pedal.
【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” (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 the swing arm/rear shock specification when you change the style or during vehicle inspection.
◯The tandem step brought in by the owner has been placed in a position where it is easy for the person at the back to ride and easy to operate the left-hand jockey shift.
【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. The tire is AVON MKⅡ.
“Drilled plate torque rod SR400/500“
〇This is a drilled design torque rod to avoid interference with the wider tire.
【Rear Fender】
◯The rear fender is a simple flat fender. We custom-made a sissy bar to match the design of various parts of the vehicle using a square rod.
【Tail Lamp】
“69 Tail TYPE1 Aluminum General Purpose MOTORROCK“
◯ A high-quality universal tail lamp with a small aluminum body, glass lens, and stainless steel stay.
【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.