20 years 20 years
" The Performance Specialists since 1990"

DYNO CHARTS for some of our motor kits.
CRF230L Pipes and motor parts instock Go big Go 250cc.
ENGINES ONLY 1870 Stone Ave. San Jose CA 95125
If you may have a question please e-mail or phone us.      enginesonly@yahoo.com  (408)275-6300 phone //(408)342-6867 fax

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April 1st 2010 marks 20 years of business for Engines Only.

All of us that are part of the  EO family would like to say thank you to our customers, friends, racers, product testers, suppliers and everyone that has been apart of our history. With racers from around the globe using EO products we are proud to continue building products that have proven to be competitive and reliable components in your motorcycle. Thank you.

  KLX140 pipes now in stock

Wake up your new KLX140 and 140L.
We have been working on the new KLX140 since early December and are pleased with our progress. Our high compression 160cc Big bore kit, cam and spring kit, Mikuni intake kit with custom throttle cable and our pipe have produced some great results. This bike is wicked fun. 

DYNO of our KLX160 motor kit click here

CRF150R Complete race ready heads in stock.
Big valve hiflow heads with competition seats and valves. $1199.95
This is the head your competition is not telling you about.

CRF150R stock bore HiCompression pistons in stock. $249.95

CRF150R Competition Motors
Big bore, big valve, big horsepower.

EO CRF150R/170 super trick race bike
For Sale $8500.00

HONDA CRF150R   170cc kits in stock
DYNO runs show 27.5 Horsepower and 13.5 pounds of Torque

Whats on the ENGINES ONLY CRF150R Big Bore 170cc race bike.
Applied Racing Clamps and clutch lever, Barnett clutch plates and springs, Hlebo Bros revalved forks with heavy springs and Tungsten DLC coated tubes and hard anodized axle castings and forkcaps, polished and hard anodized shock body with revalve and heavy spring, EO Megacycle billet cam with custom valve springs with titanium retainers, EO 170cc Ultimate Big Bore Kit with forged racing piston, EO Outlaw series slip-on muffler with spark arrester,
EO Tokyo Mods modified and jetted CRF150R carb, EO RoostMX graphics kit, Moto and Supermoto wheels with Talon hubs and Excel rims by A&A Racing, EO Steahly flywheel weight and a bunch of little stuff and lot's of sweat from some great industry people. 

Click for Dyno chart

Fits CRF150 & 230F and CRF150R

EO Shroud Graphics $59.95

Fits DRZ/KLX125 in Blue and Yellow

Yamaha TTR125 and 230    Honda CRF80F, 100F, 150F, 150R soon, 230   Suzuki DRZ125L Kawasaki KLX125

YAMAHA TTR-230
Big Bore Kits, 250cc, 
Outlaw exhaust systems, AMA legal
32mm Mikuni intake kits complete

SUZUKI DRZ-125
Big Bore Kits, 190cc, 
Outlaw exhaust systems, AMA legal
Non linkage REAL shift lever

2006-08  CRF150F 225cc Big Bore motor kit. Bolt on. Runs on pump gas.
Now get 225cc and monster torque with electric start. $599.95      More info

2003-2005 Ultimate CRF 150F Big Bore motor kit. ENGINES ONLY 250cc Ultimate kit. GO  BIG

Check out the review of our CRF230- 250cc Big Bore Kit  from the people at: 

   Fits 2008 CRF230L and CRF230M
Competition use only.
CRF150R Expert fork kits for your
CRF150 and 230.

CRF150 and CRF230 Fork kit
 This is the complete kit for your front end upgrade. Adding stiff springs to your stock forks is not the same as an ENGINES ONLY CRF150R fork conversion kit.
 We take brand new Showa forks and revalve and respring to your weight and riding style, we include a brake adapter plate so you can use your CRF150F caliper instead of the single piston CRF150R caliper, steering stop plate, long brake hose, CRF150R fender and screws (your 150F fender will bottom on your tire), CRF150R number plate, fork guards and screws, axle with nut and spacers along with modified CRF150R triple clamps, bearings and bolts.
 This is the only kit that is complete and ready to bolt on. This is not a buy your fork tubes on E-Bay and spend the next six weeks looking for parts to put you bike together. This is complete and ready to ride kit and includes professional suspension shop tuning for you.
 Yes you can install this kit after dinner one night and ride the next morning.  
$1800.00 complete, Yes complete you do not have to buy one extra screw or machine anything. Just install and ride.
CRF/XR 80 120cc Big Bore kit

Go Big with this sleeper kit CRF/XR80 120cc Big bore kit 11 horsepower from your 80          Click here for more info

Suzuki/Kawasaki DRZ/KLX 125
190cc Big Bore kit

All EO motor kits run on 91 octane pump gas.
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Complete DRZ/KLX 125 Big Bore kit
The proof is in the power.

187.80cc, 10.5:1 compression ratio, produces 16 horsepower with our carb and Outlaw pipe.
Includes cylinder resleeve / piston, rings, clips / gaskets / performance camshaft / performance valve springs.
With cylinder and camshaft exchange $799.95  Outright no exchange $999.95

f EO DRZ190 trainer for 5 time GNCC champion /AMA National Hare Scrambles champion / Factory Suzuki rider Rodney Smith.
Great article about Rodney. click here

EO_OUTLAW  Series high pipes
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Outlaw pipes are built and finished in the United States.

Our true megaphone style pipe produces the best horsepower and torque in all RPM ranges.
More bottom end and more top end.

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All our high pipes include a tuned head pipe and spark arrester..

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SuperTrapp 4" tunable plates (CA 96 DB legal) disperses noise radially with no loss in power

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Aluminum heat guard for enhanced rider protection

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Our pipes are stainless steel.

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Available for Honda XR / CRF80,100,150,230, Yamaha TTR125, Kawasaki / Suzuki DRZ/KLX125.    Now $349.95   +++Competition use only.+++

OUTLAW series low pipe now available for CRF80F, 100F, 150F and 230F /L.
Dirt track, supermoto and road racing applications. This pipe makes lots of power.
Includes: Stainless steel pipe and all mounting hardware. $349.95ea 
+++Competition use only.+++

***ENGINES ONLY CRF230 big bore makes 23.25hp ***
***ENGINES ONLY CRF150 big bore makes 18.81hp ***

CRF230/250cc dyno charts. CRF150/175cc dyno charts.

Engine Performance Kits
All EO performance kits run on standard 91 octane pump gas.

CRF250kit.jpg (119749 bytes)

CRF 100, 150 and 230 BIG BORE KITS 
  CRF230  and 230L to a full 250cc.

ENGINES ONLY kits ready now.


 CRF150 to 170cc or full 175cc.  
ENGINES ONLY Kits ready now.

 CRF100 Big Bore Kit. Only $119.95**
110cc kit raises compression and increases performance.

**New EO CRF150 28mm Performance Carb. kit**
This kit works with stock airbox or K&N filter.  
Now $299.95

CRF 150 carb kit stock boot.jpg (346857 bytes) CRF 150 carb kit.JPG (897764 bytes)

CRF and XR 80, 100, 150, 230, 250 and 400 PoweRing.
Includes all hardware for easy bolt on installation.
This exhaust end fits on your stock XR or CRF pipe in place of the stock baffle. Increases power by being less restrictive than the stock baffle. No drilling or cutting required, it bolts right on. 
Remove your baffle and mount a less restrictive EO PoweRing.
Our 12 plate exhaust is adjustable to meet AMA and CA 96db noise requirement.
Plate type spark arresters disperse noise radially for quieter operation and avoid the clogging of screen type spark arrestors.
Increased performance and an inexpensive alternative to high priced "Exhaust Systems".  Now only $99.95
Power-Ring.jpg (91372 bytes)

 

 

Our Mission

To provide the highest quality, most reliable products in a timely and efficient manner so that you are smiling every time you ride your bike.

 

Company Profile

ENGINES ONLY was started in 1990 By Frank Nye who was prodded by fellow dirt track riders to make quality big bore kit for the then standard training bike the Honda XR100.
Our first three motor kits went to Bubba Shobert, Wayne Rainey and Kenny Roberts. While we still sell most of our parts and motor services to the professional racing community our products are designed for use on regular pump gas and are meant to be reliable and long lasting and stand up to the abuse of training, trail riding or racing. Our motor components make great torque and have a wide usable powerband. All of our products are parts that we have personally ridden and tested for many hours so you can trust them to perform for you.

ENGINES ONLY continues to develop, test and provide quality products to the minibike community for Honda, Yamaha, Suzuki and Kawasaki motorcycles. We intend to bring new and innovative products to production as the industry evolves and expands with future four stroke minibikes.

 

Contact Information

Please note our new phone number and address for our new larger facility. After July 1 2009
Telephone
(408) 275-6300
FAX
(408) 342-6867
Postal address
1870 Stone Ave. San Jose, CA 95125
Electronic mail
General Information: enginesonly@yahoo.com
Sales:
Customer Support:
Webmaster:
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