Reducing weight on a track bike: Difference between revisions

(6 intermediate revisions by 2 users not shown)

Line 1:

[[Category:Track Days]]

==Reducing Curb Weight==

It's actually fairly easy to cut weight off the Ninja 250, as long as it's only going to be used for track days or racing.

Line 23:

Line 25:

Weight savings so far: 21.5 lbs

==Optional items==

====Intake====

~~==Optional items==~~

The stock airbox weighs about 2.9 lbs. A set of Uni 4" filters (installation of which is detailed [http://faq.ninja250.org/wiki/Which_aftermarket_air_filters_fit_the_Ninja_250%3F here]) and a little crankcase ventilation filter weigh about .5 lbs. It's only a 2.4 lb savings, but pulling that much off the bike is not to be scoffed at, particularly in competitive riding. As with installing a Muzzy below, changing the intake means you must adjust your [[I want to improve my carburetor jetting|jetting]].

====Exhaust====

Removing the stock exhaust and replacing it with a ~~Muzzy system will save you~~ [http://faq.ninja250.org/wiki/Muzzy_Exhaust ~~at least 9~~ lbs].

Removing the stock exhaust and replacing it with a [http://faq.ninja250.org/wiki/Muzzy_Exhaust Muzzy system] will save you some weight. The stock system (as removed from a 2005) weighs about 18.75 lbs. A used Muzzy (which may be missing some packing, and is therefore probably a bit lighter than a new system) weighs 7.25 lbs. This is a savings of 11.5 lbs.

Naturally, swapping in a Muzzy will require [[I want to improve my carburetor jetting|rejetting]]. The stock jetting is almost too lean to start with.

Other aftermarket exhaust systems (all of which use two cannisters, leaving the stock headers intact) may or may not reduce weight. Check with the manufacturer. If their cans are lighter than 6.75 lbs (the weight of one stock exhaust can), you'll see an improvement in curb weight.

====Bodywork====

@@ Line 1: / Line 1: @@
 [[Category:Track Days]]
+==Reducing Curb Weight==
 It's actually fairly easy to cut weight off the Ninja 250, as long as it's only going to be used for track days or racing.
@@ Line 23: / Line 25: @@
 Weight savings so far: 21.5 lbs
+==Optional items==
+====Intake====
-==Optional items==
+The stock airbox weighs about 2.9 lbs.  A set of Uni 4" filters (installation of which is detailed [http://faq.ninja250.org/wiki/Which_aftermarket_air_filters_fit_the_Ninja_250%3F here]) and a little crankcase ventilation filter weigh about .5 lbs.  It's only a 2.4 lb savings, but pulling that much off the bike is not to be scoffed at, particularly in competitive riding.  As with installing a Muzzy below, changing the intake means you must adjust your [[I want to improve my carburetor jetting|jetting]].
 ====Exhaust====
-Removing the stock exhaust and replacing it with a Muzzy system will save you [http://faq.ninja250.org/wiki/Muzzy_Exhaust at least 9 lbs].
+Removing the stock exhaust and replacing it with a [http://faq.ninja250.org/wiki/Muzzy_Exhaust Muzzy system] will save you some weight. The stock system (as removed from a 2005) weighs about 18.75 lbs.  A used Muzzy (which may be missing some packing, and is therefore probably a bit lighter than a new system) weighs 7.25 lbs.  This is a savings of 11.5 lbs.
+Naturally, swapping in a Muzzy will require [[I want to improve my carburetor jetting|rejetting]].  The stock jetting is almost too lean to start with.
+Other aftermarket exhaust systems (all of which use two cannisters, leaving the stock headers intact) may or may not reduce weight.  Check with the manufacturer.  If their cans are lighter than 6.75 lbs (the weight of one stock exhaust can), you'll see an improvement in curb weight.
 ====Bodywork====