NEMESIS:  A formidable and victorious rival or opponent.    •    Isn’t it time you became a Nemesis?  •  Small Shop, Big Performance!    •    Quality second to none!    •    Reasonable Prices for an Expensive Sport.   •   Pour-in, bolt-on and internal performance modifications    •   Notice: Change your oil and clean your air filter regularly.   •    We are now a Big Gun exhaust retailer offering performance products for ATVs, Side by Sides and off road motorcycles   •    New Service: Custom suspension springs for popular vintage bikes and heavier riders   •    Los Lunas Motorsports is now the newest Yamaha dealership in New Mexico, mention this website and receive 10% off parts and accessories   •  New Product: Rekluse Auto-Clutches; CALL FOR BEST PRICE.   •   New: We are a direct retailer for Pro Circuit’s performance products and services   •   New location 1930 Main St. NE Suite 10 Los Lunas, NM 87031 
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Welcome to Nemesis Performance

    I grew up riding and racing in the 
genesis of American motocross, Southern California, in the 70’s.  I joined the US Air Force in 1980 and after a 25 year career returned to my passion and started the business.  I spent over 11 years on research and development (R&D); buying and trying products, modifying my own race bikes to verify or discount manufacturers' claims. During that time, I have been crafting and servicing customers' machines with proven top-quality parts producing fast, reliable, and great handling bikes that are always in the front of the pack.  

At Nemesis it's not about quantity, it's about quality and personal service. All mechanical work is accomplished by myself to ensure the highest quality.  Service manuals and professional grade tools are used to achieve quality assurance.  You get follow-up support anytime and track support at all events I attend.  I can bring you performance and reliability at an affordable price.

All of the performance upgrade machining is contracted through top engine builders in California, Colorado, and Utah using computer-controlled precision equipment for the finest quality available. All heads are vacuum tested to ensure a factory sealCutting valve seats by hand is considered an emergency procedure in today's motorcycle industry and cannot match the precision required for high performance engines.  For all local engine work that requires removal of the head a soda blasting procedure is used to remove all carbon build up.  For the racer who wants more we also offer ceramic and performance coatings to squeeze even more power out of your engine. 

Race Tech suspension work is accomplished in-house utilizing state-of-the-art equipment and only the highest quality fluids. I cross hatch (polish) the lower fork tubes and shock shafts to ensure proper surface finish.  I use a vacuum pump procedure to service KTM/Husqvarna suspensions.  The Race Tech vacuum pump is so powerful it actually draws air out of the fluid to ensure a factory result.  For those who prefer the performance of a Factory Connection, Pro Circuit or Powerband suspension, I am an authorized dealer and can ship your suspension to their facilities utilizing a suspension case to ensure a damage free transit.  In addition, I sell titanium and aluminum bolts, nuts, axles and various other parts to reduce unsprung weight, rotating mass, and to lower the center of gravity (CG) of your bike to enhance overall handling.

VP leaded fuels, VPR, U4.4, C12 and the newest fuel T2 pre-mixed at 40:1 are formulated for high performance motorcycle engines; they provide lubrication, produce more power, easier starting, better throttle response, and lower maintenance costs.  Remapping/jetting is recommended for U4.4.  Most modern dirt bikes are designed to run on a minimum of 91 octane, however pump gas contains ethanol as well as reformate, a waste byproduct used in the refining process, and not preferred for performance motorcycle engines. 
In addition, pump gas contributes to the buildup of carbon on the piston, combustion chamber and exhaust ports that robs your engine of power.  If you want top performance and reliability from your race bike, you need to use race fuel.

To have a true performance machine you need to address handling, usable power output and reliability of your engine.  You know, it does you no good to lead a race for 99 of 100 miles or 4 of 5 laps just to sit on the side of the course and watch your competition go by.   I can help you select the level of performance that you can afford, so you get the best results for your money.

My goal is mechanical perfection, what's yours?

Darren #721



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