Jan 19, 2023 · What is the Honda XR400? It's a full-size off-road motorcycle for trail riding. It has an air-cooled 4-stroke 400cc engine with conventional-style forks and a piggy-back shock, but what does that mean for you?

Engine Size: 397cc (known as 400cc) Horsepower: 34.3 HP Engine Type: 397cc air-cooled dry-sump single-cylinder four-stroke Valve Train: SOHC; four-valve RFVC Transmission: 5-speed, manual-clutch Starting: Kickstart Cooling System: Air-cooled Fuel Capacity: 2.5 Gallons (9.5 Liters) Fuel Type: Petrol / Gasoline Fuel Supply: Carburetor Oil ...

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May 1, 2014 · With the engine being fresh it should raise the power in the rev range a bit and sweeten the response but not be too far from stoke to be a reliability issue. Key it appears is to ensure the jetting is correct for the intended use.

Feb 1, 2006 · Step by Step rebuilding of the XR400. I need a step by step rebuilding guide with all the tips and tricks. If you have personally rebuild the XR400 (2001) here is your chance to say all the things you whish you did and things you wish you did not do. Looking to Replace: Sleeve Piston Rings Valve ...

Peak power is reached at 7,500 rpm after which the eager motor politely begs to be shifted. Ample mid-range torque is available, making wheelies on the XR easy. Honda credits the XR's wide range of power to a design concept they've been utilizing for over ten years.

Oct 25, 2004 · Sorry to be the bearer of bad news, but the 400ex motor is not anywhere near a direct swap for the XR400. The cases are actually shaped different and the C/S sprocket will not line up properly on the different motor, not to mention the motor mounts.

The engine pulls strongly down low, has a solid midrange and revs well for a mildly tuned air-cooled bike. There is no E-start, but it cranks over easily and reliably. The five-speed trans is good for a little more than 70 mph, but first will save your butt in the tightest trail predicaments.

Honda XR400 (XR400R, XR400 Motard): specs. Honda XR400 (XR400R, XR400 Motard): images, gallery. Honda XR400 (XR400R, XR400 Motard): video. Honda XR400 (XR400R, XR400 Motard): manuals, parts, microfiches.

Feb 4, 2007 · Since the XR400 motor is very similar to the XR600/XR650L in design, I would expect it to have a similar life expectancy. Being well cared for is the key to long life. I have read in other threads where stock XR650L's have gone 30,000+ miles without a top-end overhaul.