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Expansion Chamber to Silencer Coupler Seal and Spring Kit for 50 cc KTM SX50 Euro 2-Stroke Exhaust Pipe Fits KTM SX 50SX '02+, Husqvarna TC TC50 '17+, GasGas MC MC50 '21+ OEM # 45105057000 17/20mm

4.7 (2) Write Review
Free shipping on orders over $29.99

$19.99

$ 8 .99 $8.99

In Stock

About this item

  • Designed to fit 50cc KTM 50SX 2002 & Up, Husqvarna TC50 2017 & Up, and GASGAS MC50 2021 & Up that use OEM # 45105057000 sleeve that measures 17/20mm only.
  • Replaces factory equipment with exact fit quality parts.
  • Kit comes complete with what you see.
  • Kit configured to re-seal stock or aftermarket pipe with proper new swivel hook springs, "O" Rings, and hi-temp silencer to pipe coupler.
  • Complete set, nothing else needed to seal up your two stroke exhaust pipe.


17/22mm Expansion Chamber Seal kit for 2002 & Up 2-Stroke 50cc Euro Dirtbikes KTM, GasGas, & Husqvarna Motorcycles. Kit replaces old factory parts with fresh springs, o-ring seals, and pipe to silencer coupler. Replaces OEM # 45105057000 sleeve that measures 17/20mm only. *Excludes the following: 2001 50 SX Pro Senior LC 2002 50 Junior Adventure 2002 50 Mini Adventure 2002 50 SX Pro Junior LC 2002 50 SX Pro Senior LC 2002 50 Senior Adventure


Shawn R
Reviewed in the United States on May 15, 2024
Product worked well for my sons 2001 KTM 50. So far so good. Would recommend.
CB&B Contracting
Reviewed in the United States on December 8, 2024
Everything fit as it should. Spring didn't break during install as they commonly can. Spring is very sturdy. Will need a brake adjustment tool for install
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