PRO CIRCUIT PIPE WORKS KTM 125 SX

§ 01 / Part

18201858 PIPE WORKS KTM 125 SX

Fits 5 bikes
£366.52 Save 15%
£311.54

incl. VAT

In stock — ships in 3 working days

Usually dispatched within 3 working days.

Part #: 18201858

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PRO CIRCUIT

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§ 02 / About this part

What it is

The PRO CIRCUIT PIPE WORKS KTM 125 SX, full systems. Stocked by Iron Offroad, the UK MX hard parts specialist.

This pipe is specifically tuned for the 125 SX power valve and porting. The raw finish requires maintenance to prevent rust in the UK climate. It sits at the front of the bike and improves the high-RPM pull. The hand-welded seams are a hallmark of this performance-focused part. It replaces the stock expansion chamber for better track performance. Check your jetting or EFI mapping after fitting to ensure the engine runs correctly. This is a vital upgrade for any 125cc racer.

§ 03 / Specs

The numbers

Brand
PRO CIRCUIT
Part number
18201858
Category
Full Systems
Weight
1.83 kg
VAT
20%

// Fitment

Will it fit your bike?

Fits 5 models · 5 year-bands

* Fitment data is provided as a guide. Verify compatibility against the bike's owner's manual or service handbook before ordering. Iron Offroad accepts no liability for incorrect application. Full terms and conditions apply.

§ 05 / About Iron Offroad

Iron Offroad

Iron Offroad is the off-road sibling of Iron City and Iron stable — this is a UK shop for motocross, enduro, and trail-bike hard parts. All fitments live on the site, and listed against MX models KTM, Husqvarna, GasGas, Yamaha, Honda, Kawasaki, Suzuki, and Beta. Pick your bike on the timing-tower. Our USP is in the data, fully enriched to assist with accurate fitting and finding the right part for your bike quickly and easily. Brands you'd find on a paddock workbench; pads, sprockets, plastics, fork seals, cables, gaskets, bars, the things that actually wear out. Road-bike kit, scooter parts, and quad gear sit elsewhere. Dirt & e-moto only. We operate from our huge storage facility in Leeds. Iron Offroad is a trading name of Iron Stable Ltd, registered in Mildenhall — Company No. 17061294. We have a RICH motorcycle history with multiple moto brands the images showing where we came from and our history, the business recently pivoted into hard parts and online retail.
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Free UK shipping over £100 14-day no-quibble returns OEM-grade parts only UK-based support · 9 to 5 Race-shop prices, paddock service Click & collect from Leeds
Free UK shipping over £100 14-day no-quibble returns OEM-grade parts only UK-based support · 9 to 5 Race-shop prices, paddock service Click & collect from Leeds