RFX Race Start Button KTM All Elec Start Model 250-530, part number FXKB 50900 55ST

RFX Race Start Button KTM All Elec Start Model 250-530

£14.99 GBP
Sale price  £14.99 GBP Regular price 
Skip to product information
RFX Race Start Button KTM All Elec Start Model 250-530, part number FXKB 50900 55ST

RFX Race Start Button KTM All Elec Start Model 250-530

£14.99 GBP
Sale price  £14.99 GBP Regular price 

Part no. FXKB 50900 55ST

Check it fits your bike

The RFX Race Start Button KTM All Elec Start Model 250-530 from RFX is listed to fit 65 models from KTM, Husqvarna and GasGas, including KTM 125 SX 2022-2027, KTM 125 XC 2022-2027 and KTM 125 XC-W 2022-2027. It is part of our switches range.

Specifications

Brand RFX
Manufacturer Item No. FXKB 50900 55ST

Fits these bikes

This RFX part is listed as fitting 65 models. Check your model and year below.

Make Model Years
GasGas EC 125 (EC125) 2025
GasGas EC 250 (EC250) 2021-2026
GasGas EC 250 F (EC250F) 2021-2026
GasGas EC 300 (EC300) 2022-2026
GasGas EC 350 F (EC350F) 2021-2026
GasGas EC 450 F (EC450F) 2024-2026
GasGas EX 250 (EX250) 2022-2026
GasGas EX 250 F (EX250F) 2022-2025
GasGas EX 300 (EX300) 2022-2027
GasGas EX 350 F (EX350F) 2022-2026
GasGas EX 450 F (EX450F) 2022-2024
GasGas MC 125 (MC125) 2022-2027
GasGas MC 150 (MC150) 2025-2026
GasGas MC 250 (MC250) 2022-2026
GasGas MC 250 F (MC250F) 2021-2027
GasGas MC 300 (MC300) 2025
GasGas MC 350 F (MC350F) 2022-2026
GasGas MC 450 F (MC450F) 2021-2027
GasGas RX 450 F (RX450F) 2023
Husqvarna 450 RALLY 2025
Husqvarna FC 250 (FC250) 2014-2027
Husqvarna FC 350 (FC350) 2014-2027
Husqvarna FC 450 (FC450) 2014-2027
Husqvarna FE 250 (FE250) 2014-2019, 2022-2027
Husqvarna FE 350 (FE350) 2014-2027
Husqvarna FE 450 (FE450) 2014-2019, 2022-2027
Husqvarna FE 501 (FE501) 2022-2027
Husqvarna FS 450 (FS450) 2022-2026
Husqvarna FX 350 (FX350) 2022-2027
Husqvarna FX 450 (FX450) 2022-2027
Husqvarna TC 125 (TC125) 2022-2027
Husqvarna TC 150 (TC150) 2025-2026
Husqvarna TC 250 (TC250) 2022-2027
Husqvarna TC 300 (TC300) 2025-2027
Husqvarna TE 125 (TE125) 2025-2027
Husqvarna TE 150 (TE150) 2020-2027
Husqvarna TE 250 (TE250) 2019-2027
Husqvarna TE 300 (TE300) 2019-2027
Husqvarna TX 300 (TX300) 2022-2027
KTM 125 SX 2022-2027
KTM 125 XC 2022-2027
KTM 125 XC-W 2022-2027
KTM 150 EXC 2020-2023
KTM 250 EXC 2019-2026
KTM 250 EXC-F 2011-2019, 2022-2027
KTM 250 SX 2022-2027
KTM 250 SX-F 2011-2027
KTM 250 XC 2022-2027
KTM 250 XC-F 2022-2027
KTM 250 XC-W 2022-2027
KTM 300 EXC 2019-2027
KTM 300 SX 2023-2027
KTM 300 XC 2022-2027
KTM 300 XC-W 2022-2027
KTM 350 EXC-F 2012-2027
KTM 350 SX-F 2022-2027
KTM 350 XC-F 2022-2027
KTM 450 EXC 2009-2016
KTM 450 EXC-F 2017-2027
KTM 450 RALLY 2022-2026
KTM 450 SMR 2022-2026
KTM 450 SX-F 2009-2027
KTM 450 XC-F 2022-2027
KTM 450 XCF-W 2023-2027
KTM 500 EXC-F 2022-2027

Product details

RFX Race Series start buttons are made to replace the OEM part exactly. Each one comes with the same couplings, fasteners and connectors as the genuine part, and the cable lengths match it exactly.

Key features

  • Made for a wide range of bikes
  • OEM replacement
  • Takes all the original connectors
  • Cable length matches OEM

Fitting instructions

  • Take off the front number plate.
  • Carefully cut the cable ties that secure the start and stop switch wiring to the handlebars, then unscrew the clamps and leave the switches hanging.
  • Find the switch connector on the bike. It is often found near the headstock on the chassis, but can sometimes be under the tank.
  • Release the connector clip and remove the old switch, noting how its wiring is routed.
  • Clean the connector with a contact cleaner, for example Maxima Electrical Contact Cleaner.
  • Fit the new switch loosely to the handlebars where you want it.
  • Route the new wiring along the same path as the old switch, then clip the two halves of the connector together.
  • Turn the bars fully in each direction to check the wires have enough free play and do not pull tight. Adjust if needed.
  • Where possible, refit cable ties to the wiring, keeping the cables behind the bars so roost cannot damage them.
  • Put your number plate back on.

Questions about this part

Will the RFX Race Start Button KTM All Elec Start Model 250-530 fit my bike?

It is listed for 65 models, including GasGas EC 125 (2025), GasGas EC 250 (2021-2026), GasGas EC 250 F (2021-2026), GasGas EC 300 (2022-2026). The full list is in the "Fits these bikes" table on this page, and the fit check next to the price tells you straight away for your saved bike.

What is the part number?

The manufacturer part number is FXKB 50900 55ST. Our stock code is 111431.

How much is delivery?

Order before 3pm for same day dispatch. UK Next Day delivery is £7.99, and free on orders of £100 or more. Pre 12:00 (£9.99) and Pre 10:00 (£14.99) upgrades are charged at any order value.

Can I return it?

Yes. You can return it within 30 days of delivery for a refund. You pay the return postage unless the item is faulty, damaged or wrong, in which case we cover it. See our Returns page for how. Returns

You may also like