PROX Brake Disc for KAWASAKI KX 125, KX 250, KXF 250 2003-2019

On KAWASAKI KX 125, KX 250, KXF 250 from 2003 to 2019, the PROX 37.BD24203 brake disc fits in place of the original part. Gripped by the pads, the brake disc soaks up the heat of every stop. Its design (cut-outs, petal profile) helps clear mud and cool it down.

Specifications

• Brand: PROX
• Manufacturer part number: 37.BD24203

When to replace it?

• Thickness below the minimum stamped on the disc or given in the manual.
• Warped disc: vibration through the lever or pedal, brake that “pulses”.
• Deep scoring, cracks or blueing after overheating.

Measure the thickness with a micrometer every time you change the pads, and replace the disc as soon as it reaches the minimum thickness, or if it's warped or cracked.

Fitting tips

1. Clean the hub mounting face: a single grain of sand under the disc is enough to throw it out of true.
2. Fit the disc the right way round (markings facing out, direction of rotation if indicated).
3. Tighten the bolts in a criss-cross pattern to the manufacturer's torque, with medium-strength threadlocker.
4. Degrease the disc and ideally fit new pads.
5. Bed in with a dozen progressive stops.

Why PROX?

ProX Racing Parts has been supplying engine and clutch parts to motocross riders since 1975, from its headquarters near Amsterdam. According to its catalogue, most of its parts are made in Japan, by manufacturers that also produce parts for the Japanese motorcycle makers.

Spare parts and items to plan

• Brake pads : T-BRAKE · NISSIN
• Brake fluid : MOTUL 500 ml · MOTUL 5 L

Frequently asked questions

Should the pads be changed along with the disc?
It's strongly recommended: worn pads have taken on the shape of the old disc and won't brake well on a new one.

Compatibility

Check the exact model and year of your bike in the list below before ordering.

Fits:
KAWASAKI KX 125 2008
KAWASAKI KX 125 2007
KAWASAKI KX 125 2006
KAWASAKI KX 125 2005
KAWASAKI KX 125 2004
KAWASAKI KX 125 2003
KAWASAKI KX 250 2008
KAWASAKI KX 250 2007
KAWASAKI KX 250 2006
KAWASAKI KX 250 2005
KAWASAKI KX 250 2004
KAWASAKI KX 250 2003
KAWASAKI KXF 250 2019
KAWASAKI KXF 250 2018
KAWASAKI KXF 250 2017
KAWASAKI KXF 250 2016
KAWASAKI KXF 250 2015
KAWASAKI KXF 250 2014
KAWASAKI KXF 250 2013
KAWASAKI KXF 250 2012
KAWASAKI KXF 250 2011
KAWASAKI KXF 250 2010
KAWASAKI KXF 250 2009
KAWASAKI KXF 250 2008
KAWASAKI KXF 250 2007
KAWASAKI KXF 250 2006
KAWASAKI KXF 250 2005
KAWASAKI KXF 250 2004