Featured Products

Rear Brake Pedal Return Spring kit

Rear Brake Pedal Return Spring Kit

This a product that offers tunable pedal resistance and a better overall feel by placing the spring in compression instead of tension. The Rear Brake Spring Kit provides a consistent feel, minimizing the “on-off” feel of most rear brakes, and will minimize debris from jamming the mastercyclinder.

These 6061 billet powder coated aluminum spring plates are precision machine to allow the installation into the rear master cylinder body on the top part and has a bottom plate that will hold the spring in a consistent manner for the best brake feel.

The 1.5″ stainless steel compression wound spring is made in the USA and will install easily onto the motorcycle rear brake master cylinder spring plates and keep the brake pedal pushed out when not in use.
A simple and effective option for fixing motorcycle brake drag.

Rear Brake Pedal Return Spring Kit consists of spring, spring top and bottom plate . The spring plates contains the spring as well sealing the master cylinder.

 

$24.99 /$34.98

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Brake Fluid Reservoir Sock/Cover Premium Protection. Race-Ready Style.

Practical. Professional. Spears Racing. Not only does it perform — it looks the part. The clean terry cloth finish and bold Spears Racing logo give your bike that professional, purpose-built appearance racers demand. Whether you’re pushing limits on the track or turning heads on the road, this reservoir cover delivers peace of mind and premium style in one rugged package. Ready to upgrade your protection?

  • UV Protection & Reservoir Longevity
  • Leak & Spill Containment
  • Crash & Track Safety
  • Easy Maintenance
  • Universal Fit

 

Add the Spears Racing Brake Fluid Reservoir Sock/Cover to your bike today — the smart, race-proven choice that keeps your fluid where it belongs and your motorcycle looking its best.

 
$14.99/$11.99 ea.
 
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CNC Aluminum Engine Case Covers Kawasaki Ninja 400

Aluminum Engine Case Covers Kawasaki Ninja 400/Ninja 500

Spears Racing decided to jump into the arena to produce a slim “sexy fit” cover that contours to the lines of the engine. Most of the other covers take away with the BIG~N~Bulky mind set/appearance.

These engine case covers/savers are engineered and made to a high specification from 6061 Aluminum billet using the latest CNC Technology. Engine case covers are sold in sets of three (3) protective covers, clutch cover, stator cover and the water pump cover, they are black anodized making them Strong, attractive, and resistant to mechanical or chemical wear.

These covers are designed and engineered to bolt right on top of the OEM covers in minutes. It is designed to help prevent damage to the fragile OEM clutch cover, stator cover and the very thin OEM water pump housing during a crash or tip over.

$319.99/$299.99 ea.

 

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Kawasaki 400/500 Transmission Shift Kit with Shift Spacer

Spears Racing believe there needs to be a little more clarity to this product, a lot of entry riders do not know, the issues that this is designed for is for the Kawasaki ninja 400/500 which is a commuter built motorcycle the way it is set up from the factory will in fact work for the daily rider, but once you have decided to take your 400cc to the track a lot of things will change.

The current shift arm has a shift paw on the end(behind the clutch basket) this engages to the shift star that is connected to the shift drum, you can see in the detailed pictures that from the factory the shift paw does not fully engage to the shift star.

 

Kit contains the following:

    $99.99/$79.99 Kit

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Spears Racing Motorcycle Titanium Fasteners Kits

Grade 5, also known as Ti6Al4V, Ti-6Al-4V or Ti 6-4, is the most commonly used alloy. It has a chemical composition of 6% aluminum, 4% vanadium, 0.25% (maximum) iron, 0.2% (maximum) oxygen, and the remainder titanium.It is significantly stronger than commercially pure titanium while having the same stiffness and thermal properties (excluding thermal conductivity, which is about 60% lower in Grade 5 Ti than in CP Ti). Among its many advantages, it is heat treatable. This grade is an excellent combination of strength, corrosion resistance, weld and fabricability

 

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Spears Enterprises/Spears Racing  Is the North American Distributor of HM Products.
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Kawasaki Ninja 500cc Clutch Bypass Plug

Clutch By Pass Plug Kawasaki Ninja 500

This plug is designed to allow you to remove your current OEM control housing (left Handlebar) from the system and still allow you to start your motorcycle and shift thru the gears. This unit will plug into your Stock harness and let your bikes electronic system to still function properly . No more just twisting your wires together, This is a Simple Plug N Play install.

The cost of the fix is better than the stress it will cause.

This is a necessity for the Track day rider to the professional racer

This unit is currently used by race team and riders all around the world.

 

$29.99/$24.99ea.

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Kawasaki Ninja 400cc/500cc Bored Throttle Bodies

Spears Racing’s Preparation of the High Flow Throttle Bodies is a multi-step process that includes: boring custom fit CAD designed throttle blades (this is done per job) we do not cut to the throttle plate size , we cut our plates to the bore size, and we also are reducing shaft profile (If needed), installing button head screws, milling topside and tumble polishing. By increasing air flow up to as much as 15%.

Gains from most of the Kawasaki Ninja 400cc/500cc Bored Throttle Bodies can be dependent on other modifications you have done to your engine. Generally speaking, anytime a throttle body is added, there will be some added horsepower. The amounts can range from 7 to 15% increase of RWHP depending on what other modifications are done to the engine.

This is a direct bolt on to your motorcycle, this will still allow you to use your stock OEM air box or if you would like to you can fit sets of individual air pods to your throttle bodies.

 $749.99 per set

 
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Kawasaki Ninja 400cc/500cc Heat Shield/Thermal Deflector

Kawasaki Ninja 400cc/500cc Heat Shield/Thermal Deflector

Because of the forward-positioned air intake uses two (2) small ducts at the front of the bike to route fresh air to the engine, the air is heated by the engine and will pull down performance of your engine.

Cold air is dense compared to hot air, which allows for a better quality burn when it is mixed with fuel and ignited.

The Heat Shield/Thermal deflector, it’s designed to protect the air box/ filter area from the thermal radiations generated by the cooling radiator and combustion engine.

The Heat Shield/Thermal Deflector has the degree of a separating wall/deflector between air filter area and rest of engine compartment.

The use of the Spears Racing Heat Shield/Thermal deflector has the following advantages: the air flow generated by cooling radiator (i.e. thermal radiations) is deflected outside the air filter area the temperature of the air box/air filter is maintained at an optimum level (i.e. their over-heating is avoided).

$64.95/$59.99 ea.

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Brembo 107A48608 Z04 Compound

Kawasaki Ninja 300cc/400cc/500cc Brembo Z04 Brake Pads

Brembo Racing Z04 compound was developed specifically for racing and designed to provide maximum performance in the most extreme competitions.

The most significant characteristics of this material are its high friction and consistent efficiency, especially at high disc temperatures. These characteristics ensure superlative, consistent braking for the entire duration of the race and make the braking system much less prone to fade.

Brembo Racing Z04 brake pads are used in the World Superbike and SuperSport Championships. 

Brembo’s Racing Z04 compound is Brembo’s highest performance motorcycle racing brake compound.

 

 $189.99/$179.99 per set

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WHO WE ARE

SPEARS RACING

Gregg Spears is the President, founder and team manager of Spears Enterprises/Spears Racing.

He has 47 years of experience in the motorcycle Industry, including 14 years with the San Jose Police Department as Lead Technician. 40 of the 47 years, Spears has been the leader in motorcycle maintenance, 35 years of motorcycle roadracing support and team management with Spears Enterprises/Spears Racing. Being a dominant racing force in California, Spears Racing has earned several championships at the class, state, regional, national level and World Level and is recognized as one of the first Dynojet Power Commander tuning centers in the world. Spears graduated from high school in 1977 and went to work for the San Jose Police Department as its Lead Motorcycle Technician. It was soon apparent that his attention to detail was valuable to the industry, and decided to start working on motorcycles in his off-hours. Soon he found an overwhelming response to his talents, and in 1980 Spears Enterprises was born with $200.00 and a toolbox. Working from his carport and making house calls, Spears soon found a need for a total motorcycle repair facility.

In 1991 after leaving the San Jose Police Department, Spears Enterprises was opened in Campbell, California. Working as a sole proprietor, business was overwhelmed with customers and soon he had to hire employees to meet the demand of the workload. Long hours and relentless dedication to his customers led the business to grow, and by 1995 Spears Enterprises expanded by opening a second location. By this time the business had established itself as the leader in police motorcycle maintenance, having as many as 12 different police departments relying on Spears to meet their demands.

Working with specific roadracers, Spears Racing became a recognized force in AFM,AMA, CCS, WERA, AHRMA, LRRS and MotoAmerica competitions. Spears Racing has also expanded their efforts to include several racing venues across the U.S. and into Australia, Ireland, Germany, New Zealand, and the United Kingdom winning numerous International Championships while continuing to expand their racing support in the years to come.

In the summer of 2015 one of their Sponsors assembled a racing team called Emerald Roadracing, to run in the coveted race called “Isle Of Man TT.” With long hours and great dedication of rider and team they were able to finish 9th over all in the “lightweight/Supertwins” class on a Spears Racing powered Kawasaki ER650.

Spears Racing has shifted its business focus to manufacturing and supplying high-quality race products for smaller displacement motorcycles, offering a wide range of over 800 products, including championship-designed engine kits and purpose-built race parts. Their dedication to customers’ service and product quality seems to be a key priority.

What our clients say

RHNorth Carolina
Gregg, I wanted to thank you again for your help getting me the head gaskets so I could get my bike back together in time.  I ended up doing those gaskets, swapping to intake cams everywhere and a full Yosh exhaust.  The bike is a rocket ship now!  
Adam FKent, Washington
Gregg, I've use some of your stuff before, but this is the first time I have seen it in quantity. I'm super impressed with your attention to detail. Thanks for all you do, this explains why I have heard your name mentioned for years!
JaimeSilver Spring, Maryland
Gregg, I recently got my hands on the parts that I purchased from you. And I have to say they were packaged very carefully and for that I thank you. I will be installing them soon. It was a great pleasure doing business with you!
義明根木 Hiroshima, Japan
Today, great products arrived safely.  Thank you a lot for stickers and candy.  You gave me a spare gasket.  You guys are the best!  The best bike life begins!
William B Scotland
Hi Gregg Just a quick email to say how impressed I was with your service and delivery to me in Scotland. Got Parts off you a couple of months back . The service and quick response’s with emails were first class. So Thank you very much 
Jan P Norway
Hi Gregg, Thanks for quick response of my order for the Ninja 400. Got the package in my hands 2 hours ago, here way up North in Norway and the order was submitted only three days ago.
Chis A Denver, Colorado
Gregg When I called to tell you about my mysterious engine stalling you were quick to point out that you had a plug’n’play side stand lockout kit for just that situation. As always it arrived in a couple of days and went on in a jiffy. One less thing to worry about while on the track. I can’t tell you how much I appreciate the support that you are providing to my race program, with both your products and your knowledge - you rock!
Jay Mount Gravatt, Australia
Gregg The parts arrived and were installed today, I’m ecstatic. Feels like a totally different bike! Cheers, Jay
Kevin R Elm, New Jersey
Gregg,I cannot thank you enough for all of your help, support and insight. Navigating this crazy race world for a newcomer like me is not easy. It's folks like you who make it so much easier. Cheers! K
Kevin R Elm, New Jersey
Dear Gregg, I ordered a R3 transmission a couple of months ago and I am very pleased with the result.No more dropping out of gear. Rider is more than happy, so thank you!I would like to order another set. Sending the transmission from The Netherlands is quite expensive, so please add a core fee. Looking forward to hearing from you.Kind regards,Met vriendelijke groeten,
Tracy M Tennessee
Gregg, Just got my clutch rod and bearing for my Z400 today. I will tear into it in a couple weeks when there's no chance of a sunny day to ride. You were on the spot with replies and shipping and I appreciate it very much. Thanks again  By the way, did you put candy in with my parts?....good one!!

SPEARS RACING BUILDS ENGINES THAT WIN CHAMPIONSHIPS