Motorcycle Chassis




MPH has made an investment in the latest repair technology – the Scheibner “mega-M.A.X.” Frame and Chassis Measurement System. The mega-M.A.X. System was designed in Germany, and is by far the most accurate system available for measuring a motorcycle chassis and geometry. Unlike other systems that rely on measuring motorcycles to develop their dimensional database, the mega-M.A.X. contains the Factory Specifications of more than 1,150 motorcycles and compares your motorcycle to that information. The Database is continually updated and helps to eliminate “human error”, making the mega-M.A.X. System the superior solution for quick and precise measurements without dismantling the motorcycle! *

How Geometry/Misalignment’s affect a modern bike or cruiser.

Have you ever experienced any of the following?

Slow, lazy steering – nervous or twitchy front end - Runs wide on entry, mid or exit of a turn- Front end feel, No front end feedback  - Poor traction, too much spin – Little to no confidence under braking - straight line instability (head shakes) - Poor feedback - understeering/oversteering- Dramatic change in response or feel after tire change, accident, or any time the end of the bar touched the ground.

What does improved geometry/misalignment correction reflect?

  • Stability - Not heavy or nervous and twitchy
  • Steering - Easy turn-in and holds the second half of the corner snug
  • Traction - Front and rear hooked up, entry mid-turn and turn exit
  • Braking - Confidence-inspiring, not sketchy

Step 1 – Measurement

Step one is measuring the bike. This identifies handling problems resulting from production misalignment’s, offsets and twists as well as problems from crash damage. Measurements are performed by the Scheibner Mega-M.A.X. with a computerized system programmed specifically to measure, calculate and align motorcycles. You might be surprised at how much standard production tolerances can affect your handling. Now that the bike has been measured you will be provided with a clear, concise, easy to read printout of the results. The printout shows at a glance how close each critical measurement it to the factory specifications and where the problem areas are located.

  • Mainframe/swingarm Measurement: $100 (typically no bodywork removal required) No geometry data provided. Any part removal for the sake of measuring will be billed separately and discussed at time of drop off.
  • Full frame, swingarm and geometry measurement: $150 (removal of lower fairing may be required)

Step 2 – Alignment/Correction

By the time we are done with the measurement process we’ll know a considerable amount about your motorcycle. We’ll analyze the alignment, the fluidity of the steering rotation, the trueness of the wheels and rotors, the sub-frame alignment, the condition of both shock and linkage, the alignment of both forks and triple clamps, the condition of the steering stops, and a general chassis inspection.

This analysis reveals the level of alignment/correction needed. The areas of most concern are the triple clamps, steering head angle, mainframe, swing-arm distortion and alignment, forks and wheels. These show up as twists, caster, camber, and lateral misalignment’s.(i.e. short or long). We then complete a written estimate to determine the cost to repair the alignment problems. (i.e.. short or long).

  • Frame Straightening: Repair is on a per application basis. We do minor to major frame straightening, also we can straighten fork and triple clamp on most bikes.

Step 3 – Geometry Setup

  • In this phase we look at your geometry numbers.  In the computer we can manipulate front and rear ride heights, swing-arm angle and lengths to achieve the proper rake, trail and swing-arm slope.

    Note: Geometry numbers are highly dependent on tire brands and sizes. Once we have determined where to set the geometry we then apply them to your bike and measure the bike again to make sure we got what we’re looking for.

    Every rider has a different style and likes a different feel. After riding the bike it can be fine tuned to your preferences if needed.

    Geometry is critical to a motorcycle’s stability, maneuverability and handling. The Mega-M.A.X. is an indispensable tool in finding the optimum setup.

    • Geometry Setup Recommendation: case by case
    • Geometry Setup (front/rear ride height, etc.): $375.00 and up depending on the solution

    * some models require minor dis-assembly to access swingarm pivot points or clearance of the M.A.X. system.


No other system provides as many advantages

  • No dismantling with nearly all bikes (including fairings)
  • Measurements within 30 minutes start to finish
  • Measurements are carried out automatically – user errors are reduced to the minimum
  • User friendly- the system prompts with step by step instructions guiding through the measuring process
  • Results of the measurement are not affected by the state of the front fork, or swingarm damages
  • Upgraded our mega-m.a.x. system with the optional CMS for chassis tuning.
  • Get definitive information and measurements on chassis variables
  • Automatic self-tests check and recalibrate the system in order to minimize maintenance and the possibility of errors
  • Measurements of all relevant components of the bike are possible such as: mainframe, subframe, swingarm. etc.
A motorbike next to a laptop

The principle of the system

The mega-m.a.x. is a new optoelectronic system which is microprocessor controlled. The principal components are a large measuring bracket with two electronic measuring cameras, the sighting or ‘target’ bracket with two infrared illuminated targets and an integrated microprocessor. The controlling and measuring program includes the motorcycle manufacturers reference data. The program runs on a Laptop. The measuring cameras take the position of the targets at the front of the bike. Several measurements at different positions of the handlebar deliver the data for the microprocessor to calculate the exact steering head axis.

This means the mega-m.a.x.-measures the bike without removal of the front fork and most likely any other part other than to gain access for mounting, but the results are 100% unaffected by any possible distortion of the front fork. An adapted laser for minor jobs such as the measuring of the sub-frame and the swingarm, is included on the system. The display shows the ‘easy to understand’ instructions for the mounting of the gauge and the complete measuring procedure. The results from the measurement makes it easy to compare the results with the bike manufacturers specifications.

Mounting – Positioning

  • M.a.x. makes measuring motorcycle frames as easy as 1,2,3. The user doesn’t even have to remove any parts and on some models only the seat has to be removed.Minimal preparation work and the computer-controlled measurement minimize the possibility of human error. Ease of use is guaranteed by the guidance the user gets from the software. It is ‘self explaining’ and leads the mechanic through the whole procedure.

Innovative Technology

  • The m.a.x. system is a safety innovation produced by Scheibner Measuring Technology. Frame and chassis measurement is a necessary process to detect any kind of frame or chassis distortion. The max was designed to accomplish this with accuracy you can rely on. Workshops who are looking to the future of motorcycle repair/diagnosis need look no further than this system. It is the only system that is capable of measuring the new generation chassis (e.g. BMW RI 100, Yamaha GTS1000). For our customers it means confidence and piece of mind after an accident or when buying a used motorcycle. When exact results are needed quickly the m.a.x. will deliver again and again.
  • Frame measurement means primarily the determination of the relationship of two axes, the steering head to the swingarm axis. m.a.x. is a new optoelectronic system which is microprocessor controlled. The principal components are a measuring bracket with two electronic measuring cameras, the target unit with the two infrared illuminated targets and an integrated microprocessor. The bracket is centered in the swingarm pivot. The target unit is mounted on the rotating elements of the front fork. A laptop computer provides the calculations and handles the measuring process.
  • The two targets in the target unit describe a sector of a circle around the steering head axis when the front fork is turned. The measuring cameras determine and calculate the position of the two targets. With two measurements, one to the left and one to the right, m.a.x. is able to determine the axis. An additional laser on the rear of the bracket allows the measurement of the sub-frame and the swingarm. The position of the laser, parallel to the swingarm axis, is automatically detected by its travel on an integrated potentiometer.
  • m.a.x. allows the measurement of motorcycles, without removing any parts. On many bikes only the driver seat has to be removed! The measurement can be completed within 30 minutes.

The Basic Steps Of The Measuring Procedure

  • Mounting the bracket with its centering pins into the recess of the swingarm pivot bolt.
  • Fastening the target unit to the front fork with the provided clamping system.
  • Connecting the laptop, selecting the make and model from the included manufacturers data list.
  • Following the instructions on the computer screen by the taking one measurement with the front fork turned left and one turned right and finally back to the left to verify accuracy.
  • When required, position the laser at the rear of the bracket on the measuring points of the tail and the swingarm.
  • The comparison between the results and the manufacturers data are shown on the screen.
  • The camera’s constantly monitor the measuring procedure

Software & Updates

  • The easy to use m.a.x. system guides the user through the whole procedure. A separate manual is not really necessary. Assistance, when required, is provided by the program. The software includes a full list of the available manufacturers data. Regular updates can be obtained on request or by agreement.
  • m.a.x. is the only instrument capable of measuring the new generation of chassis (e.g..BMW R1100, Yamaha GTS 1000) and therefore is the system of the future. Measuring the bare frame is of course no problem. The unique database includes over 1150 different models, covering the full scale of bikes on the market today. Regular updates and constant access to the latest data via Internet downloads guarantee the most accurate and current data at all times.

The M.a.x. – Measurement Report

  • *subject to specific makes and models. Some bikes may need partial disassembly to gain access to mounting points.

Why chassis and frame measurements are essential

When and why should a chassis or frame be measured after an accident

  • For your personal safety. – A distorted steering head angle and therefore changed caster is one of the reasons for high speed wobbling
  • As documentation for insurers and surveyors. – After the insurance has settled, it is difficult to make further claims, e.g. a bent frame
  • To provide documentation validity when selling a used bike. – Legally, every accident or even falling over, must be declared to the buyer. The seller may be required, even after a long period of time, to take back the bike. Arguments concerning the condition of the frame or chassis will be avoided by providing documentary proof
  • Because it’s long been standard practice in the automobile branch. – Wheel alignment measurement of accident damaged cars is routine practice in nearly every workshop

Before Starting Repairs Or Restoration Work

  • To exclude the possibility of a false investment. – Checking the frame geometry is the first requirement before ordering lots of expensive spare or replacement parts.
cloth on a machine

When Buying A Used Bike

  • As an important element in determining the fault. – Defects in frame geometry(bends or twists) are easily and quickly detectable with a frame measurement. Expensive and time consuming replacement of parts and test drives are avoided.

With Handling Problems

  • As an important element in determining the fault. – Defects in frame geometry(bends or twists) are easily and quickly detectable with a frame measurement. Expensive and time consuming replacement of parts and test drives are avoided.

If the Chassis is out of Spec


If the motorcycle needs to be straightened, we have the most accurate jig available – the “MOTO-JIG”. The Moto-Jig is manufactured by Globaljig, (one of the most experienced and respected companies in the business) and was designed to work in conjunction with the mega-M.A.X. System. Unlike other systems that require the motorcycle to be removed from the straightening jig to be remeasured, the design of the Moto-Jig and the mega-M.A.X. system allow us to verify the measurements while the motorcycle is still in the jig. This ensures accuracy and saves time – getting you back on the road sooner!

As always MPH has taken these two pieces of equipment and made them even better. We have designed and manufactured adapters and additional fixtures to work in conjunction with the latest advances in the manufacturers frame technology including Harley Davidson’s, Suzuki, Kawasaki, Honda, and Yamaha to name a few. The reason for the additional time and development cost incurred on MPH, at the end of the day it is to give you better service.

Due to the experience and expertise straightening motorcycle frames for the last 20 years, Nationwide, Geico, State Farm, and other Insurance Companies have used our services to repair and straighten frames. For further information check out our insurance repair. – more

A motorcycle frame repair tool


In addition to measuring the critical dimensions already mentioned, the mega-M.A.X. System is capable of measuring the geometry of the motorcycle chassis. Important values such as rake, trail, wheelbase, swingarm length and swingarm slope, front and rear ride height are measured with the mega-M.A.X. and the Chassis Maximizing System attachment. This is only performed once we know that the chassis is straight or has been straightened. This gives a starting point to the true geometry of your motorcycle.


With these numbers we have generated a numerical picture of your chassis.

This allows MPH to determine the characteristics of your motorcycles handling and ride-ability. We can tell if the bike likes to turn or not, how stable it will feels With my years of experiance, I can determine first hand how your bike will fell just by looking at these numbers. The advantages that can be made at this point are endless. As always in all motorsports technology steaming from knowledge, it’s the use of this information in our everyday vehicle and powersports vehicle that makes them so great. So if you have a street bike or touring Harley and you think this doesn’t apply, think again. For example Harleys are by far the most ill handling motorcycles I have ever road off the showroom floor. With a little accurate data and some information on your riding style, including what type of riding you like to do, MPH can turn that same Harley into the best bike you have ever ridden when it leaves our showroom.



The computer software has a simulation feature built in that works in conjunction with the Chassis Maximizing System (CMS) that allows us to “virtually” test setup changes to the motorcycle BEFORE you hit the road. The software program computes changes in front and/or rear ride height, tire diameter differences, swing arm length changes due to sprocket size or swingarm extensions, etc. before we actually make the physical changes to bike directly. The CMS is a precision rail that works in conjunction with the mega-m.a.x. to acquire all the measurements needed to calculate numerous key factors to give us this numeric motorcycle. This also allows us to see the effects of simulated modifications to the rake, trail, and swingarm slope or any other figures in the table, on screen in advance.

The additional CMS (Chassis Maximizing System) will provide all you need for the fine-tuning of the chassis. The system has a simulation feature that allows you to fine tune the geometry of your bike right on the computer screen.

Optimum chassis setup for any customer with sporting ambitions, or just wanting to change tire manufacturer and restore their handling characteristics. For example, we can see what effect changing tire brands or tire sizes will have on rake, trail, swing-arm slope, or any of the other values due to tire diameter differences from one brand to another.

What it all boils down to is making motorcycle riding more fun and more comfortable, riding a little safer and more predictable. Whatever your needs may be – crash repair, a more comfortable ride, better handling – our revolutionary procedures help motorcycles perform the best they can. We solve problems that some riders don’t even know they have. Look at it this way, you don’t know better till you have ridden a better setup. You will be amazed with the results.