CR/XR80/100 Frequently Asked Questions
Note: Some of the items discussed in this FAQ are no longer available. This
information has been left online for historical reasons and to assist current owners of these now
discontinued items. If any of these parts are still available (new, used, or otherwise), they will
be listed on our product pages. To see all product listings for the this model click
Our BBR Product Identification section has more information about older products from our past.
Is the BBR pipe louder than stock?
Yes. Unfortunately, power and sound go hand-in-hand. Don't let anybody tell you
different. We have neighbors and ride in our backyard's too. So we have designed
the BBR CRF/XR80/100 pipe to accept the stock end cap from the CRF/XR80/100
exhaust. This lets you achieve the same noise level as stock. When you are
riding in your backyard, you pop on the stock end cap (3 bolts). When you're at
the track, trying to beat the local heroes, you pop on the BBR endcap. Or you
can order the BBR quiet core ( 220-BBR-1004 $39.95 ) and run the trick fluted
What is the difference between BBR's pipe and the other guy's pipes?
Compare the details and you'll understand. The BBR pipe is 100% designed and
built in our Auburn, WA production facility. We have our own in-house dyno and
ride mini 4-strokes more than all the other companies combined. We've won every
major mini 4-stroke race in the country and we sell the same pipes we race with
to the public. Our designs are painstakingly developed to achieve the best
possible performance. Most models use multi-stepped headers and all our headers
are ceramic coated or stainless steel. The muffler can is anodized to protect it and keep it
looking great for a long time. Because we're concerned with noise restrictions,
many of our exhaust systems will fit the OEM endcap (for stock noise level). For
full race mode, we include our super trick billet aluminum end cap and US Forest
Service approved spark arrester. We regularly test our competitors pipes and are
confident that ours are the best exhaust systems made.
How fast will the CRF/XR80/100 go?
Not very fast. That's why it's so stinkin' fun to ride. We do not measure top
MPH of any motorcycles. In motocross, it isn't how fast it goes, but how quickly
you get there.
What is the biggest problem with the CRF/XR80/100?
The stock suspension is pretty grim and there is no easy way to fix it. The
linkage ratio of the stock rear suspension is primitive and due to the locations
of the linkage mounts it can't get much better. For starters, our stiffer
springs can help prevent bottoming (they are sized for adults, but fast kids
enjoy them just as much). We recommend starting with on stock fork spring and
one stiff fork spring for the kids or lighter riders. The ultimate setup (with
the stock equipment) is to run our triple clamp, with the stiff fork springs,
and our swing arm with the Works Performance shock.
Why does BBR always use aluminum for its frames?
When used correctly, aluminum is the strongest, lightest material available for
use in motorcycle frame construction. Few companies use it because of the
difficulty in machining, welding, and heat-treating. The BBR crew has worked
closely with major motorcycle manufacturers perfecting the art of frame
building. Why doesn't BBR do steel frame conversions anymore?Over the years,
we've modified hundreds of CR80 frames to fit the CRF/XR80/100
motor. Because of the steel frame design, several compromises must be made to
fit that motor. Our aluminum frame doesn't have these problems. As a result, we
have completely stopped doing the steel frame conversions. When you add the cost
of all the extra parts (that don't come with the other guy's steel frame
conversion), the cost of the aluminum frame is quite good.
Will the upside down forks from bike "X" fit the CRF/XR80/100?
No upside down fork (CR80/85, RM80/85, KX80/85/100, YZ80/85, etc) will bolt
right on to the CRF/XR80/100. With a custom made steering stem (you'll need the
triple clamps) any of the mini forks can be made to fit (BBR does NOT provide
this service. Check with a machine shop in your area). Note that you will need
the complete front wheel and brakes from the bike that you rob the forks from.
The other problem is getting the back end to be the correct ride height to match
the forks. The closest thing that you can do is run our swingarm with the Works
Performance shock. If you intend to purchase the forks new from your local
dealer expect to pay $2500+ just in parts.
Does BBR sell a disc brake setup for the CRF/XR80/100?
No. Many back yard mechanics have modified the CRF/XR80/100 forks and swingarm
to fit the wheels from some modern 2-stroke mini. Lots of work is required to
make them fit. No kit exists to do this and the parts are very expensive if you
purchase them directly from you local dealer. The aluminum frame kit (using the
CR80/85 components) is the best way to get great brakes and great suspension.
Can you help me jet my CRF/XR80/100?
There are not two XRs that are raced or ridden in the same climate. The quickest
jetting test is to play with the choke. If your bike has an off-idle stumble,
that gets better by pulling the choke on slightly, then you know that the bike
is to lean. The quick fix is to move the clip on the needle down, or go up 5
sizes on the main jet. This is usually the case with any aftermarket pipe (BBR
included). You are flowing more air which means you need more gas. The stock CRF/XR80
main jet is a 95, the stock CRF/XR100 main jet is 98. We recommend a 105 with
our exhaust system for both bikes (for most common conditions and elevations).
Other sizes are available from BBR or your Honda dealer.
Is the CRF/XR80/100 legal to race in the 2-stroke Super Mini class?
Every track and racing organization is different. Check with your local track
officials. Remember that the CRF/XR80/100 is a mini 4-stroke playbike. The CR/YZ/KX/RM80/85
are full on race bikes. No modifications to the XR will make it equal in
performance to a modern 2-stroke mini. But it will still be more fun to ride.
Are the BBR CRF/XR80/100 springs too stiff for my 11 year old?
Probably. These we're designed for adults, but we have lots of fast kids that
absolutely love them. You'll have to make the decision. They are about 30%
stiffer than the stock springs. Really fast kids may want to run one stiff
spring and one stock spring.
What are the benefits of BBR triple clamps?
The BBR upper triple clamp allows the fork tubes to be slid down 1" which
raises the front of the bike. It also grabs a larger surface area of the fork
tube which prevents fork flex. BBR offers the clamps in both standard and
oversize handlebar mounts, and we have a wide variety of handlebar bends and
colors. The bar mounts are two-way adjustable to customize the rider
compartment. In addition, the bar mounts are taller.
Will the CRF/XR80/100 motor bolt into a CR 80/85 frame?
No, but a BBR complete aluminum frame kit starts at $2999 and a rolling
chassis starts at $6500. These kits allow you to use all the 96 and newer
CR 80 components.
What are the benefits of the BBR chain guide?
The stock chain guide only runs on one side of the chain. The BBR billet
chain guide wraps all the way around the chain and sprocket making it
almost impossible to derail the chain. Our chain guide has plastic on the sides,
too, to keep from destroying your chain.
What is a BBR cradle kit?
The cradle kit is a skid plate that ties the frame tubes together and helps
to prevent frame stretch and, in a worst case scenario, engine damage. It also protects the engine cases from rock damage. The BBR engine
cradle is made from heat-treated 6061 aluminum and anodized gold.
Should I run a flat slide carb on my TTR/XR?
If you enjoy driving to your local dealer to buy jet after jet in a futile
attempt to get rid of the big flat spot, then this carb is for you. If you prefer your bike not to idle or start easily and enjoy spending
more time jetting than riding, then you should install the flat slide carb.
The BBR guys finally found a use for the flat slide carb:
What should my suspension sag be set to with BBR springs?
We recommend you set the sag at about two inches. Adjust the sag to rider
preference for how quickly you would like the bike to steer.