PROX Pilot Jet for MIKUNI carburettor for HUSQVARNA, YAMAHA, KTM, SUZUKI, HONDA, POLARIS, KAWASAKI and GAS GAS 1990-2023

The PROX pilot jet is designed for HUSQVARNA CR 125, TC 125, TC 250, TE 250, TE 300, TX 125, WR 125, WR 250, WR 300, KTM EXC 250, EXC 300, SX 125, SX 150, SX 250, XCW 125, YAMAHA TTR 125, YFZ 450, YZ 125, SUZUKI DRZ 400, RM 125, RM 250, HONDA CR 125, CR 250, POLARIS OUTLAW 500, PREDATOR 500, KAWASAKI KFX 400 and GAS GAS MC 125 from 1990 to 2023. The pilot jet meters the fuel at idle and at small throttle openings, up to about a quarter. It is what makes for clean starts, a steady idle and good pick-up out of tight corners.

Specifications

• Brand: PROX
• Manufacturer part numbers: 49.010, 49.012.5, 49.015, 49.017.5, 49.020, 49.022.5, 49.025, 49.027.5, 49.030, 49.032.5, 49.035, 49.037.5, 49.040, 49.045
• Pack: 5 pieces
• Available versions: No. 10: ref. 49.010; No. 12.5: ref. 49.012.5; No. 15: ref. 49.015; No. 17.5: ref. 49.017.5; No. 20: ref. 49.020; No. 22.5: ref. 49.022.5; No. 25: ref. 49.025; No. 27.5: ref. 49.027.5; No. 30: ref. 49.030; No. 32.5: ref. 49.032.5; No. 35: ref. 49.035; No. 37.5: ref. 49.037.5; No. 40: ref. 49.040; No. 45: ref. 49.045
• Weight: 10 g

Choosing the right size

Adjust the fuel screw first. If it has to be opened or closed beyond the range given in the manual, go one pilot jet size up or down.

When to change it?

• Unstable idle, engine stalling or “hunting” at small throttle openings.
• Fuel screw having to be turned outside its normal range to get a good idle.
• Change of season or altitude.

When the fuel screw is no longer enough to get a clean idle, or when conditions change significantly (altitude, temperatures).

Fitting tips

1. Turn off the fuel tap and drain the float bowl.
2. Unscrew the old jet with a suitable screwdriver, without damaging the slot.
3. Screw the new jet in by hand, then tighten it lightly: it's made of brass and deforms easily.
4. Test-ride the bike and check the spark plug.

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

• Carburettor repair kit : ALL BALLS · PROX
• Spark plug : NGK 3230 · NGK 3530

Frequently asked questions

Why a pack of 5?
The jets are sold in packs of 5 of the same size: enough to equip several carburettors or keep some in reserve.

Is my carburettor compatible?
Check the carburettor brand given in the product name (Keihin, Mikuni…): the jet must match the brand and jet type of your carburettor. If in doubt, compare with your original jet.

Compatibility

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

Fits:
GAS GAS MC 125 2023
GAS GAS MC 125 2022
GAS GAS MC 125 2021
HONDA CR 125 2007
HONDA CR 125 2006
HONDA CR 125 2005
HONDA CR 125 2004
HONDA CR 125 2003
HONDA CR 125 2002
HONDA CR 125 2001
HONDA CR 125 2000
HONDA CR 250 2007
HONDA CR 250 2006
HONDA CR 250 2005
HONDA CR 250 2004
HONDA CR 250 2003
HONDA CR 250 2002
HONDA CR 250 2001
HUSQVARNA CR 125 2013
HUSQVARNA CR 125 2012
HUSQVARNA CR 125 2011
HUSQVARNA CR 125 2010
HUSQVARNA CR 125 2009
HUSQVARNA CR 125 2008
HUSQVARNA CR 125 2007
HUSQVARNA CR 125 2006
HUSQVARNA CR 125 2005
HUSQVARNA TC 125 2022
HUSQVARNA TC 125 2021
HUSQVARNA TC 125 2020
HUSQVARNA TC 125 2019
HUSQVARNA TC 125 2018
HUSQVARNA TC 125 2017
HUSQVARNA TC 250 2022
HUSQVARNA TC 250 2021
HUSQVARNA TC 250 2020
HUSQVARNA TC 250 2019
HUSQVARNA TC 250 2018
HUSQVARNA TC 250 2017
HUSQVARNA TE 250 2017
HUSQVARNA TE 300 2017
HUSQVARNA TX 125 2019
HUSQVARNA TX 125 2018
HUSQVARNA TX 125 2017
HUSQVARNA WR 125 2013
HUSQVARNA WR 125 2012
HUSQVARNA WR 125 2011
HUSQVARNA WR 125 2010
HUSQVARNA WR 125 2009
HUSQVARNA WR 125 2008
HUSQVARNA WR 125 2007
HUSQVARNA WR 125 2006
HUSQVARNA WR 125 2005
HUSQVARNA WR 250 2013
HUSQVARNA WR 250 2012
HUSQVARNA WR 250 2011
HUSQVARNA WR 250 2010
HUSQVARNA WR 250 2009
HUSQVARNA WR 250 2008
HUSQVARNA WR 250 2007
HUSQVARNA WR 250 2006
HUSQVARNA WR 250 2005
HUSQVARNA WR 300 2013
HUSQVARNA WR 300 2012
HUSQVARNA WR 300 2011
HUSQVARNA WR 300 2010
HUSQVARNA WR 300 2009
KAWASAKI KFX 400 2006
KAWASAKI KFX 400 2005
KAWASAKI KFX 400 2004
KAWASAKI KFX 400 2003
KTM EXC 250 2017
KTM EXC 300 2017
KTM SX 125 2022
KTM SX 125 2021
KTM SX 125 2020
KTM SX 125 2019
KTM SX 125 2018
KTM SX 125 2017
KTM SX 150 2022
KTM SX 150 2021
KTM SX 150 2020
KTM SX 150 2019
KTM SX 150 2018
KTM SX 150 2017
KTM SX 250 2022
KTM SX 250 2021
KTM SX 250 2020
KTM SX 250 2019
KTM SX 250 2018
KTM SX 250 2017
KTM XCW 125 2019
KTM XCW 125 2018
KTM XCW 125 2017
POLARIS OUTLAW 500 2007
POLARIS OUTLAW 500 2006
POLARIS PREDATOR 500 2007
POLARIS PREDATOR 500 2006
POLARIS PREDATOR 500 2005
POLARIS PREDATOR 500 2004
POLARIS PREDATOR 500 2003
SUZUKI DRZ 400 2009
SUZUKI DRZ 400 2008
SUZUKI DRZ 400 2007
SUZUKI DRZ 400 2006
SUZUKI DRZ 400 2005
SUZUKI DRZ 400 2004
SUZUKI DRZ 400 2003
SUZUKI DRZ 400 2002
SUZUKI DRZ 400 2001
SUZUKI DRZ 400 2000
SUZUKI RM 125 2007
SUZUKI RM 125 2006
SUZUKI RM 125 2005
SUZUKI RM 125 2004
SUZUKI RM 125 2003
SUZUKI RM 125 2002
SUZUKI RM 125 2001
SUZUKI RM 125 1991
SUZUKI RM 125 1990
SUZUKI RM 250 1992
SUZUKI RM 250 1991
SUZUKI RM 250 1990
YAMAHA TTR 125 2009
YAMAHA TTR 125 2008
YAMAHA TTR 125 2007
YAMAHA TTR 125 2006
YAMAHA TTR 125 2005
YAMAHA TTR 125 2004
YAMAHA TTR 125 2003
YAMAHA TTR 125 2002
YAMAHA TTR 125 2001
YAMAHA TTR 125 2000
YAMAHA YFZ 450 2013
YAMAHA YFZ 450 2012
YAMAHA YZ 125 2021
YAMAHA YZ 125 2020
YAMAHA YZ 125 2019
YAMAHA YZ 125 2018
YAMAHA YZ 125 2017
YAMAHA YZ 125 2016
YAMAHA YZ 125 2015
YAMAHA YZ 125 2014
YAMAHA YZ 125 2013
YAMAHA YZ 125 2012
YAMAHA YZ 125 2011
YAMAHA YZ 125 2010
YAMAHA YZ 125 2009
YAMAHA YZ 125 2008
YAMAHA YZ 125 2007
YAMAHA YZ 125 2006
YAMAHA YZ 125 2005
YAMAHA YZ 125 2004
YAMAHA YZ 125 2003
YAMAHA YZ 125 2002
YAMAHA YZ 125 2001
YAMAHA YZ 125 2000