What Race Tech suspension does differently
Race Tech manufactures aftermarket suspension components — primarily fork internals, shock absorbers, and cartridge kits — designed to replace or upgrade the stock suspension on motorcycles. The company does not make complete suspension systems from the frame up; instead, it sells parts that fit inside your existing forks and shocks or replace them entirely. The goal is to change how your bike handles bumps, cornering, and weight transfer by altering oil flow, spring rates, and damping characteristics.
Stock motorcycle suspension is engineered as a compromise. Manufacturers balance cost, warranty liability, and the need to work acceptably for riders of different weights and riding styles. Race Tech suspension targets riders who want to tune their bike for a specific weight, riding style, or track condition. A common upgrade path is a Race Tech cartridge kit installed inside your existing fork tubes, or a complete Race Tech shock absorber bolted in place of the stock unit.
The suspension changes how your motorcycle responds to inputs — how quickly the forks compress when you brake, how the bike settles in a corner, and how the rear wheel tracks over bumps. These changes affect tire grip, braking stability, and how much physical effort you need to control the bike. They do not change the frame geometry or steering angle; they change the mechanical behavior of the components that connect your wheels to the frame.
Key Takeaways
- Race Tech makes fork cartridges, shock absorbers, and internal valving components that replace or upgrade stock suspension parts on motorcycles.
- The main tuning variables are spring rate (how stiff the suspension is), compression damping (how fast the suspension compresses), and rebound damping (how fast it extends back).
- Installation usually requires removing your forks or shock, disassembling them, and either installing a cartridge kit inside or swapping the entire component.
- Proper setup depends on your weight, riding style, and what you want the bike to do — there is no single "correct" setting that works for all riders.
- Race Tech offers suspension for street bikes, dirt bikes, and track bikes, and the tuning approach differs between them.
The three main tuning variables in suspension
Spring rate determines how much force is needed to compress the suspension. A stiffer spring resists compression more; a softer spring compresses more easily. Spring rate is measured in pounds per inch (lbs/in) on motorcycles. If your bike feels like it wallows in corners or dives excessively under braking, the spring rate may be too soft. If it feels harsh over bumps or the suspension does not compress enough, the rate may be too stiff. Race Tech sells springs in different rates, and many of their cartridge kits allow you to swap springs without removing the entire fork or shock.
Compression damping controls how fast the suspension compresses when you hit a bump or brake hard. Damping is created by forcing oil through small passages (called shims) as the suspension moves. More compression damping slows the compression stroke, which can improve stability under braking and in hard cornering. Too much compression damping makes the bike feel stiff and unresponsive to small bumps. Race Tech cartridges typically include adjustable compression damping, often split into low-speed and high-speed circuits — low-speed controls how the suspension responds to slow, steady inputs like body weight in a corner, while high-speed controls response to rapid impacts like hitting a pothole.
Rebound damping controls how fast the suspension extends back after compressing. If rebound damping is too slow, the suspension stays compressed and the bike feels wallowy or unstable. If it is too fast, the suspension rebounds too quickly and can kick the bike or cause the wheel to lose contact with the ground. Race Tech cartridges allow adjustment of rebound damping independently of compression, so you can tune each separately.
How Race Tech cartridge kits install inside your existing forks
A cartridge kit is a self-contained damping unit that fits inside your fork tubes. Instead of replacing the entire fork, you remove the fork from the bike, drain the oil, disassemble the fork tubes, and install the cartridge assembly inside. The cartridge contains all the internal valving, shims, and passages that control damping. Once installed, you refill the fork with the correct weight of oil, reassemble, and reinstall on the bike.
The process typically takes two to four hours if you have basic mechanical skills and the right tools — mainly a fork seal driver, a cartridge removal tool specific to your fork model, and a torque wrench. Race Tech publishes installation instructions for each cartridge kit, and many motorcycle shops can perform the installation if you prefer not to do it yourself. The cost of installation labor varies by shop and region.
Cartridge kits are popular because they preserve your original fork tubes and triple clamps, so the bike's geometry and appearance do not change. They are also less expensive than replacing the entire fork. The trade-off is that you are limited to the damping range the cartridge offers — you cannot change the spring rate without buying a separate spring kit, and some cartridges have fewer adjustment options than a full Race Tech fork replacement.
Complete Race Tech fork and shock replacements
Race Tech also manufactures complete fork assemblies and shock absorbers that bolt directly onto your motorcycle frame in place of the stock units. A complete fork replacement includes new fork tubes, triple clamps, and internal cartridge damping. A complete shock replacement is a bolt-in unit that connects your swingarm to the frame.
Complete replacements offer more tuning range than cartridge kits because the entire assembly is designed around Race Tech's damping philosophy. They also allow you to change spring rates more easily and often include more adjustment knobs or ports for fine-tuning. The downside is cost — a complete fork or shock is significantly more expensive than a cartridge kit — and installation may require frame modifications or alignment work depending on your bike model.
Complete replacements are more common on track bikes, dirt bikes, and high-performance street bikes where suspension performance is a priority. On older street bikes or bikes where you want to preserve originality, a cartridge kit is usually the first choice.
What changes when you upgrade your suspension
After a Race Tech suspension upgrade, the most noticeable change is usually how the bike handles bumps and corners. A properly tuned suspension compresses smoothly under braking, settles quickly in a corner, and maintains tire contact over rough pavement. The bike may feel more responsive to steering inputs because the chassis is not wallowing or diving as much. Braking stability often improves because the front end does not dive as far, keeping the front tire in a more consistent contact patch.
On a track, the changes are more dramatic. A tuned suspension allows you to carry more speed through corners because the bike does not roll as much and the tires maintain better grip. Acceleration out of corners improves because the rear wheel does not squat excessively. Braking distances can shorten because the front end stays more stable and the tire does not lose grip due to excessive dive.
On a street bike, the changes are more subtle. The ride may feel slightly firmer because damping is optimized for your weight rather than a wide range of riders. Handling in emergency maneuvers — hard braking or sudden swerving — usually improves. Comfort on smooth pavement may decrease slightly if the suspension is tuned stiffly, but comfort on rough roads often improves because the damping is better matched to the suspension movement.
How to determine what suspension settings your bike needs
Suspension tuning starts with your weight. Race Tech publishes baseline spring rates and damping settings for different rider weights. If you weigh 150 pounds, the baseline is different than if you weigh 220 pounds. Your weight affects how much the suspension compresses at rest (called sag) and how much force is needed to move it. Most Race Tech documentation includes a sag measurement — the amount the suspension compresses when you sit on the bike in riding position — and a target sag range. Measuring sag requires the bike on a level surface, a measuring tape, and a helper, but it is the most objective starting point.
Your riding style is the second variable. If you ride aggressively on a track, you want stiffer compression damping and a higher spring rate to resist the forces of hard cornering and braking. If you ride on the street and encounter potholes and railroad tracks, you want softer compression damping to absorb impacts without harshness. If you ride slowly on smooth pavement, you want different settings than if you ride fast on rough roads.
The third variable is what you want the bike to do. Do you want it to turn in faster? Do you want it to stop shorter? Do you want it to feel more planted in corners? Do you want a smoother ride over bumps? These goals sometimes conflict — a stiffer suspension may improve cornering but worsen bump compliance. Race Tech documentation and online forums for your specific bike model often include recommended settings for common goals.
Most riders start with the baseline settings for their weight, ride the bike for a few days, and then make small adjustments. If the bike feels harsh, you reduce compression damping or soften the spring. If it feels wallowy, you increase compression damping or stiffen the spring. Adjustments are usually made in small increments — one or two clicks on an adjustment knob — and tested over multiple rides before making the next change.
Race Tech suspension for different motorcycle types
Race Tech manufactures suspension components for street bikes, dirt bikes, and track bikes, and the tuning approach differs between them. On a street bike, the goal is usually a balance between handling performance and ride comfort over varied road surfaces. On a dirt bike, the goal is often maximum traction and control over loose terrain and jumps. On a track bike, the goal is maximum grip and stability at high speeds and lean angles.
Street bike suspension from Race Tech typically emphasizes mid-range damping — not too stiff, not too soft — and allows adjustment of both compression and rebound. Dirt bike suspension is usually tuned for faster rebound and higher spring rates to handle impacts from rocks and roots. Track bike suspension is often tuned very stiffly with high compression damping to resist the forces of hard braking and cornering at the limit of grip.
Race Tech publishes different cartridge kits, springs, and shock absorbers for each category. A cartridge kit designed for a street bike may not fit a dirt bike fork, and the damping characteristics are optimized differently. When shopping for Race Tech suspension, verify that the product is designed for your bike type and model year.
Frequently Asked Questions
Can I install a Race Tech cartridge kit myself, or do I need a shop?
You can install it yourself if you have basic mechanical skills, a fork seal driver, and the specific cartridge removal tool for your fork model. The process takes two to four hours. Many motorcycle shops offer installation for a labor fee, which varies by shop and region. Race Tech publishes detailed instructions for each cartridge kit, and online forums for your bike model often include user experiences and tips.
How much does Race Tech suspension cost?
Cartridge kits typically cost between $300 and $600 per fork or shock, depending on the model and adjustment options. Complete fork or shock replacements cost significantly more, ranging from $800 to $2,000 or higher depending on the bike and components. Installation labor, if you use a shop, adds to the total cost. Prices vary by retailer and region.
Will Race Tech suspension make my bike faster?
Suspension does not add horsepower, but it can improve how effectively your bike uses the power it has. Better suspension control means better tire grip, which allows you to brake later, accelerate harder out of corners, and carry more speed through turns. On a track, these improvements can add up to noticeably faster lap times. On the street, the improvement is usually better handling and stability rather than outright speed.
What if I get the settings wrong?
Most Race Tech suspension components are adjustable, so you can change the settings without removing the cartridge or shock. If you set the compression damping too stiff, you can reduce it by turning an adjustment knob. If you set the spring rate wrong, you can buy a different spring and swap it in. The process is iterative — start with baseline settings, ride, adjust, and repeat until you find what works for your weight and riding style.
Does Race Tech suspension work on older motorcycles?
Race Tech makes cartridge kits and components for many older bike models, but not all. Compatibility depends on your fork and shock design. Before purchasing, verify that a Race Tech product is available for your specific bike model and year. Race Tech's website includes a model compatibility guide, and motorcycle forums for your bike often discuss which Race Tech products fit.