Airbox
Mod (XR650R) - A very
popular air-box modification for the XR650R. By qadsan
Carburetor
Adjustments & Tuning (XR400R/Keihin 36mm) - As delivered,
with an exhaust diffuser installed and a noise suppressor in the air
box, your bike may be jetted rich for your riding needs. By 4Strokes.com
Cheap
XR100R Mods - After reading through your
website I decided I would volunteer the mods I did on my 6 year old
sons 2000 XR100R. The cost of this project was about $10.00 and that
was just for new jetting. By Greg Kipp
Exhaust Noise Test Data
(101KB PDF file) - This PDF file contains exhaust noise level (dB)
ratings for different model Honda dirt bikes with various aftermarket
exhaust systems. Please go to the California State Parks Off-Highway
Motor Vehicle Recreation Division
Website for the latest edition. By John Franger
How To Set Up a Disc Type
Exhaust System - Intended for 85-87 & 91-98 XR600R and
93-98 XR650L with a WB E-series exhaust system. May be helpful for
other models with disc type exhaust systems. By White Bros
Joe's
XR400R Hop-Ups! -
I've owned my XR400R for nearly four years now, and still after all
this time I am not ready to part with it just yet. By Joe Sexton
Lever
Pivot Bolt & Boot - A clean mod when you remove stock
hand guards and replace with bar mounted style. By 4Strokes.com
Measurement of
Exhaust Sound Levels (40KB PDF file) - This SAE Standard establishes
the test procedure, environment and instrumentation for determining
the sound levels. By SAE Mc Committee
Modifying
the XR250L - So you just bought
a new XR250L. Have you noticed how heavy it is? Have you noticed that
it doesn't have much punch? By Rick Ramsey
Speed vs RPM Calculator for
the XR400R (31KB Excel file) -
This Excel spreadsheet calculates speed vs RPM for various tire and
sprocket changes on XR400's only. By Bob Bendt
Stuart's
XR200 Hop-Up's! - I bought an XR200
new in 83 as a 2nd play bike. This was the last good year before the
weird engine in 84-85. By Stuart Watson
Uncorking
the Honda XR650R - Modifying or uncorking the XR650R BRP
for higher performance using all factory parts (per Honda Tech Bulletin).
Tips
& Tricks For The XR250R/L - This articles is based on
an Australian model 1997 XR250R/L but can be beneficial for other
bikes. By Daniel Stebbeings
XR250R
Exhaust Mod - Use a screwdriver wedged in the hole in the
stainless cover where the Torx screw was. By Stuart Moss
XR400R
Stator Upgrade - I opted for a new 200w unit. I wanted more
power because I was installing dual headlights, and possibly other
accessories in the future. By Robb
XR650L
(Dave's) Carb Mods - Mods for the 42.5mm diaphragm-type CV
Keihin carb. By Dave Closs & Brian Jackson
XR650L
Electrical Relocation Mod - First off, I took off the whole
rubber box thing where it was all housed. I trashed the bracket and
built a different one... By Ryan
XR650L
Oil Cooler - Stock XR400R oil cooler installed on an XR650L.
By helrich (of the forums)
XR650R
Race Prep Tips - 1. Check right side foot peg bolts on a regular
basis. 2. The air filter is held in place by the left side panel.
Be sure the front lower clip has adequate tension. By a guest
XR650R
Stator Rewind - You've installed a mega watt, quadruple beam,
uranium isotope, halogen hybrid headlight, only to find that the BRP
is seriously lacking in the electron pumping department. By Eric Foster