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Fork Clamp Assembly
Fork Clamps

Steering 101

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Modern Bikes: Honda Yamaha KTM Kawasaki

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Questions?
Contact Carlyn
at (512) 751-8811
Front Axle Center Adapters
Front Axle Center Adjusters reposition the axle to sit directly at the end of the fork tubes. This repositioning along with the fork clamps at 68mm offset contribute to the overall handling and hookup of the motorcycle entering and exiting corners.
All mounting hardware, axle, wheel spacers. Works in conjunction with a Honda 19" wheel.
There is a bracket available to hold your front disk, sold separately for $25

Price:
$ 200 set

Honda® CRF450 Upper and Lower Fork Clamps
These fork clamps are designed to specifically work with the Honda's standard components, such as the fork stems, bearings, dust covers, clamp bolts, handle bar clamps and stops.  They are machined from hollowed 6061-T6 aluminum making them lighter without compromising the integrity of the fork clamps.  Designed with 8 1/2" tube centers and 68mm offset.  The fork tubes slide up and down limitelessly clearing the handlebars.  Pre-drilled holes for number plates.  These clamps are to be used with the center axle fork bottom adapter sets.
This set-up creates a much more responsive steering and better rear wheel hookup.  The rear wheel hooks up because the weight pivot point is transferred behind the tubes.

Click on image for additional pictures.

Price:
$ 300 pair (U&L Clamp)

Adjustable Fork Clamps - 7 5/8" center or 8 1/2" center  :   for Honda®, Yamaha®, Kawasaki® and KTM®
These fork clamps are made for 35mm-41mm tube holes with either a 7 5/8" center or 8 1/2" center. Adjustable offsets range from 55 through 75. Each offset insert is design with 2 offset measurements. The clamps will come with one pair of offsets, additional offsets sold separately.



Adjustable Fork Clamps (7 5/8" center)$ 465
(includes one pair of offsets)
Adjustable Fork Clamps (8 1/2" center)$ 525
     for Honda, Yamaha, Kawasaki and KTM modern bikes
Additional Offset$ 55pair
Handle Bar Mounts$ 50pair

Fork Assembly: Non-Adjustable Wide Tree (Vintage Flat Trackers)
Vintage Flat Track Fork Clamp Assembly "Triple Tree".  Non-adjustable clamps machined from 6061-T6 billet aluminum.  Designed with a 75mm offset, 7 5/8" or 8 1/2" tube centers.  Available in 35mm or 36mm tube hole size.  An adjustable 1" aluminum stem and nut.  Pre-drilled to hold number plates.
This front end will create a much more rigid fork steering response.

Price:
7 5/8" wide tree$ 350 assembly
8 1/2" wide tree$ 395 assembly
Handlebar Mounts$ 50 assembly

STEERING 101: How it works.
The basic elements of steering include rake, trail, and offset.

The trail plays a role in stabilizing the front-end by helping your tire develop a restoring force that attempts to keep your motorcycle traveling in a straight line.  The longer the trail, the more the motorcycle will resist turns and be more stable on straight line driving.  A shorter trail allows for quick and easier turns.  The shorter trail makes the motorcycle want to "fall" into the turns.

The rake plays a role by allowing any lean of the wheel to be translated into a turn of the wheel towards that lean.  A more vertical rake allows the bike to handle bumps and ruts well, HOWEVER, by having a smaller rake you create a smaller trail and forfeit some straight line driving stability.  A smaller rake also produces a lighter handling feel when turning. As you increase the rake, the motorcycle will produce a more heavier or sluggish handling feeling since the weight of the chassis is attempting to self-straighten the fork as it hangs in the steering axis.

The trail and the rake directly affect each other.  If you shorten one, you automatically shorten the other.  The opposite is also true.  If you increase the angle of the rake, you also increase the length of the trail.

The third basic element is the offset.  Offset is defined in millimeters (mm) and is measured from the centerline of the top of the steering stem axis to the centerline of the top of the fork tubes.  An offset provides a second option for the setup of how the motorcycle will handle. The smaller offsets (35mm - 60mm) allows the motorcycle to angle more into the corner and push through the turn. However on exiting the corner, you will experience less traction allowing you to turn easier and stay on the inside of the track.  As you increase the offset (60mm - 75mm) you obtain more traction coming out of the corners, but the greater offset forces the motorcycle into an upright position and you will drive more towards the outside of the track coming off the corner.

Other factors such as weight transer when braking, fork length, and tire size may also play a role in changing the trail and rake and should be given consideration when determining your set-up.
Sales & Service
4815 W. Braker Lane
Ste 502 ~ PMB 373
Austin, TX  78759
(512) 751-8811
Carlyn K. Cheney
email: ccheney@flattrackaccessories.com

Design & Fabrication
21716   117th Lane
Bloomfield, IA  52537
Jerry Cheney - 81k
Jeremey Cheney
QUESTIONS?
Contact Carlyn
at
(512) 751-8811
(641) 459-2212