Kawasaki Ninja 250R
“Dusk”
 
modifications
IMAGE MODIFICATION TYPE PURPOSE
  K&N
 washable air filter

2010/09/01
Engine
Intake / Exhaust
Having improved airflow on the output end, we decided to add some efficiency to the input side.  K&N's air filters are a can't-go-wrong way to give any vehicle a little performance boost.  And since you wash the filter rather than discard it, it's less wasteful, too!
BikeMaster
 drive chain
 104 link
 O-Ring

2010/08/01
Drivetrain Because of the change in rear sprocket size, it was necessary to remove at least one link from the chain length.  We kept the original for a spare, and will keep an extra connecting link with it.  The new chain is a BikeMaster O-Ring chain, 104 links long.
PMP Sprockets
 rear sprocket
 39-tooth
 red-anodized aluminum

2010/08/01
Drivetrain This rear sprocket is lighter weight, since it's both smaller, and machined from aluminum.  The weight reduction is secondary, though, to the final drive ratio change.  What was 6th gear at 60mph is now 73mph!  With the 15/39 combo., 60mph comes at just 6125rpm.  The lower cruising revs will increase MPG and decrease engine wear.
Kawasaki
 Front Fender
 OEM 2009 ZX14

2010/06/01

Body and Frame After searching for a front fender that is both stylish and functional to improve aerodynamics, the OEM fender from Kawasaki's own ZX14 was used, along with custom mounting brackets and a little elbow grease to fit it within the 250's fork. MPG is just under 70 again @ 62mph average speed.
ZX6R muffler JT Sprockets
 front (countershaft) sprocket
 15-tooth, steel

2010/04/15

JT p/n JTF1539
Drivetrain With improved aerodynamics and power on tap, focus can be shifted to the drivetrain to improve fuel economy and top speed.  The original 14-tooth front sprocket was swapped for a 15t, increasing top speed from 99.4 to 106.5mph, and lowing 60mph crusing RPM from 7380 to 6900.
ZX6R muffler Kawasaki
 ZX-6R OEM Muffler
 red anodize w/ black trim

2009/09/15

Kawi p/n 18087-0180
Engine
Intake / Exhaust
For a better flowing exhaust, we looked no further than Kawasaki.  The OEM muffler for the 600cc Ninja ZX-6R supersport bike flows much better than the original 250R muffler, and looks more sporty to boot.  Installation required a new mounting bracket and exhaust adapter.  Carbs were rejetted to compensate for the additional airflow.
vertical license plate holder Deyeme Racing
 License Plate Bracket
 vertical mount

2009/09/15

DMR p/n KEX2VLB
Body and Frame To make a sport bike more aerodynamic, many riders eliminate the rear fender.  Aerodynamics are improved, but the rider is more vulnerable to getting tagged with "rooster tail" debris.  Rather than remove the fender, we created a license plate bracket that holds the plate vertical instead of horizontal to improve rear aerodynamics.
SlipStreamer Hotbodies
 Windscreen
 GP Dark Smoke

2009/09/01

MCSS SKU# 194396
Body and Frame This aftermarket windscreen is an attractive dark smoke color, enhancing the look of the bike.  While it isn't any longer than stock, the middle "bubble" is higher, helping to extend the envelope for more efficiency when riding in a tucked position, especially in combination with our windscreen extension.
Deyeme Racing
 front airdam

2009/08/15

DMR p/n KEX2FAD
Body and Frame To help improve aerodynamics, and protect the exhaust and engine from road debris (especially in wet weather), we added this front airdam.   Construction is tempered aluminum, and attachment is by alloy rivet nuts and button head screws.  Shown here brushed, but was soon painted it to match the bike.  It's much more desirable to clean dirt and road gunk off of this than from inside the engine bay!
Casco
 12v Accessory Outlet

2009/08/01


JCW p/n 1JA 135763
Electrical Convenient access to the battery for off-season trickle-charging, as well as having a handy place to recharge a phone or flashlight, can be a real life-saver.  This weatherproof accessory outlet from Casco fit the bill nicely.  It's wired directly to the battery with its own inline fuse, so OEM wiring is unaffected.
Deyeme Racing
 Windscreen Extension

2009/07/15

KEX2WSE
Body and Frame Aftermarket windscreens are expensive, and most don't extend the length of the windscreen.  Our solution for improved aerodynamics and rider comfort was to create a V-shape of tempered aluminum, to push the mounting position for the windscreen up and back.  The 3" extension uses rivet nuts for a secure connection, and works with OEM and aftermarket shields.  Cost was less than a new windscreen, and the aerodynamic improvement is obvious.