RFX Pro Series Throttle Tubes are machined from billet aluminium and feature a sealed bearing and Teflon sleeve to provide an effortless throttle action. RFX Pro Series Tubes resist damage in a crash unlike standard plastic tubes. For these reasons they are used by many of the top race teams and riders in the U.K Championships such as STR KTM.

• Replacement throttle tubes for all popular off road bikes.
• Uses the same cam profile as the OEM part for proper throttle control.
• Hard anodised billet aluminium construction.
• Sealed ball bearing and Teflon sleeve virtually eliminate friction.
• Laser etched with RFX logo.
• Knurled grip mounted area.
• Reduced chance of damage if you crash.

Fitting Instructions 

• Slide the rubber boot down and disassemble the throttle housing, remove the old throttle tube taking care not to damage the throttle cables.
• Carefully remove grip from the old throttle tube if required.
• Inspect the cables and housing for excess damage or wear, clean and lube them or replace if required.
• Clean the handlebar and inspect for damage where the old throttle tube has been spinning on the bar if a ridge is present replace the handlebars.
• Slide the new throttle tube on the handlebar and lube using a penetrating lubricant preferably Maxima MPPL (do not use grease as this attracts dirt and makes the throttle stick after a short period of time).
• Re-assemble the throttle cables and housing again using some penetrating lubricant.
• Tighten the throttle housing in the correct position on the handlebars.
• Adjust the cable to the required (free play amount) of your liking.
• Rotate the handlebars to their maximum position to check proper operation of the throttle and correct cable routing, some re-adjustment of the cable may be required.
• Slide the rubber boot back over the housing.
• Cover the hole in the end of the grip with some electrical tape (To stop glue entering the throttle barrel) and apply a small amount of RFX grip glue to the outer end of the throttle tube on the outside diameter.
• Apply a small amount of RFX grip glue to the inside of the new grip and slide onto the tube.
• Twist the grip to the correct position and leave to dry.
• Apply RFX safety grip wire if needed.
• After the glue has dried again check proper operation of the throttle.  
  

See full fitment below:

Make	Model	Year(s)
GAS GAS	EC 250 (21-26)	2021, 2022, 2023, 2024
GAS GAS	EC 250 F (21-25)	2021, 2022, 2023, 2024
GAS GAS	EC 350 F (21-26)	2021, 2022, 2023, 2024
GAS GAS	MC 125 (21-26)	2023, 2024, 2025
GAS GAS	MC 150 (25-26)	2025
GAS GAS	MC 250 (22-26)	2023, 2024, 2025
GAS GAS	MC 250 F (21-26)	2021, 2022, 2023, 2024, 2025
GAS GAS	MC 250 F FACTORY EDITION (23-26)	2023
GAS GAS	MC 300 (2025)	2025
GAS GAS	MC 350 F (22-25)	2023, 2024, 2025
GAS GAS	MC 450 F (21-26)	2021, 2022, 2023, 2024, 2025
GAS GAS	MC 450 F FACTORY EDITION (23-26)	2023
GAS GAS	MC 450 F PRADO EDITION (2025)	2025
GAS GAS	MC 450 F TROY LEE DESIGNS (2023)	2023
HUSQVARNA	FC 250 (14-26)	2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025
HUSQVARNA	FC 350 (14-25)	2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025
HUSQVARNA	FC 450 (14-25)	2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025
HUSQVARNA	FE 250 (14-26)	2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025
HUSQVARNA	FE 350 (14-26)	2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024
HUSQVARNA	FE 350 PRO (2024)	2024
HUSQVARNA	FE 450 (14-26)	2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024
HUSQVARNA	FE 501 (14-25)	2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024
HUSQVARNA	TC 125 (14-26)	2023, 2024, 2025
HUSQVARNA	TC 150 (25-26)	2025
HUSQVARNA	TC 250 (14-26)	2023, 2024, 2025
HUSQVARNA	TC 300 (25-26)	2025
HUSQVARNA	TE 125 (14-26)	2025
HUSQVARNA	TE 150 (24-26)	2024, 2025
HUSQVARNA	TE 150 I (20-23)	2023
HUSQVARNA	TE 250 (23-26)	2023, 2024, 2025
HUSQVARNA	TE 250 I (18-22)	2018, 2019, 2020, 2021, 2022
HUSQVARNA	TE 300 (23-26)	2023, 2024, 2025
HUSQVARNA	TE 300 I (18-22)	2018, 2019, 2020, 2021, 2022
HUSQVARNA	TE 300 PRO (24-25)	2024, 2025
KTM	125 SX (94-26)	2023, 2024, 2025
KTM	150 SX (08-26)	2023, 2024, 2025
KTM	250 EXC TPI (18-23)	2018, 2019, 2020, 2021, 2022, 2023
KTM	250 EXC TPI SIX DAYS (18-23)	2018, 2019, 2020, 2021, 2022, 2023
KTM	250 EXC-F (06-26)	2017, 2018, 2019, 2020, 2021, 2022, 2023
KTM	250 EXC-F SIX DAYS (07-26)	2017, 2018, 2019, 2020, 2021, 2022, 2023
KTM	250 SX (94-26)	2023, 2024, 2025
KTM	250 SX-F (05-26)	2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025
KTM	250 SX-F ADAMO EDITION (2025)	2025
KTM	300 EXC TPI (18-23)	2018, 2019, 2020, 2021, 2022, 2023
KTM	300 EXC TPI ERZBERGRODEO (20-23)	2020, 2021, 2022, 2023
KTM	300 EXC TPI SIX DAYS (18-23)	2018, 2019, 2020, 2021, 2022, 2023
KTM	300 SX (23-26)	2023, 2024, 2025
KTM	350 EXC-F (12-26)	2017, 2018, 2019, 2020, 2021, 2022, 2023
KTM	350 EXC-F SIX DAYS (12-26)	2017, 2018, 2019, 2020, 2021, 2022, 2023
KTM	350 SX-F (11-26)	2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025
KTM	450 EXC-F (17-26)	2017, 2018, 2019, 2020, 2021, 2022, 2023
KTM	450 EXC-F SIX DAYS (17-26)	2017, 2018, 2019, 2020, 2021, 2022, 2023
KTM	450 SX-F (07-26)	2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025
KTM	450 SX-F FACTORY EDITION (13-26)	2021
KTM	450 SX-F HERLINGS REPLICA (2019)	2019

We deliver to most countries. If you are unsure, feel free to contact us and we can help you out.

For more information, please visit our Shipping and Delivery Page.

We accept returns. You can return unopened items in the original packaging within 30 days of your purchase with receipt or proof of purchase. If 30 days or more have passed since your purchase, we cannot offer you a refund or an exchange.

For more information, please visit our Returns and Refunds Page.