1. Pistons, Rings & Piston Kits Products
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  3. KTM SXS16150000

KTM SXS16150000 Kit Big Piston 125CC 144CC 150CC

fits model: 125sx. make: Ktm.

Sxs16150000 Ktm 125sx Factory 150 Kit Big Bore Piston 125cc 144cc 150cc

( Manufacturer Part Number: SXS16150000 ), ( Engine Type: 2-stroke ), ( Type: Piston ), ( Machine Type: Off-road Motorcycle ), ( Items Included: Gasket ), ( Vintage Part: No ), ( Performance Part: Yes )

Review KTM Factory 150 Kit Big Bore Piston 125cc 144cc 150cc fits 125SX

Introducing the KTM SX 125/150 Big Piston Kit (Part Number: KTM SX16150000), designed for the KTM 125SX and 150SX motorcycles. This kit is an excellent upgrade option for riders seeking increased power and performance.

The heart of this kit is the big piston, which is available in 125cc, 144cc, and 150cc sizes. The piston is made from forged aluminum alloy, ensuring durability and strength. The oversized piston increases the engine displacement, leading to more power and torque without significantly increasing the bike's weight. This results in improved acceleration and enhanced overall performance.

The KTM SX16150000 kit also includes a high-performance cylinder head. The head features optimized porting and a new exhaust port design, which improves gas flow and power output. The kit comes with a new exhaust system, consisting of a high-performance header pipe and a silencer. The exhaust system is designed to reduce weight while increasing power and improving the bike's sound.

Additionally, this kit includes a high-performance intake manifold, which optimizes air flow into the engine, further enhancing power and torque. The kit also comes with a new clutch kit, consisting of a clutch plate, clutch pressure plate, and a clutch spring. The new clutch kit ensures smooth engagement and improved clutch feel.

To accommodate the increased power output, the kit includes a high-performance cooling system. The cooling system features a larger radiator and a new fan design, which ensures efficient cooling and improved thermal stability. This is crucial to prevent engine damage and to maintain optimal engine performance.

The KTM SX16150000 Big Piston Kit is a comprehensive upgrade solution for riders looking to extract maximum performance from their KTM 125SX or 150SX motorcycle. This kit not only provides increased power and torque but also enhances the overall riding experience by improving acceleration and responsiveness. With its high-quality components, this kit is an excellent investment for any serious off-road enthusiast.

The KTM SX 125, 144cc, and 150cc models are popular choices for those looking for high-performance two-stroke dirt bikes. The 150cc big piston kit is an upgrade for the standard 125cc model, offering more power and better overall performance. Here are some pros and cons of buying a KTM SX 150cc with the big piston kit:

Pros:

1. Increased power: The big piston kit provides an additional power output of around 10-15 horsepower, making the bike more powerful and faster.

2. Better performance: With more power comes better performance. The bike will have improved acceleration, top speed, and overall handling.

3. Customization: The kit allows riders to customize their bike to their preferences, making it a popular choice among enthusiasts.

4. Durability: The KTM SX is known for its durability, and the big piston kit is no exception. The engine components are designed to withstand the rigors of off-road riding.

5. Fun factor: The increased power and performance make the bike more fun to ride, making it a great choice for those looking for an adrenaline rush.

Cons:

1. Cost: The big piston kit can be expensive, with the cost of the kit and any necessary installation expenses adding up.

2. Complexity: Installing the kit requires a certain level of mechanical expertise, and the installation process can be time-consuming.

3. Fuel consumption: Two-stroke engines consume more fuel than their four-stroke counterparts, and the increased power output of the big piston kit will result in even higher fuel consumption.

4. Noise: Two-stroke engines are known for being loud, and the big piston kit will only make the bike louder.

5. Emissions: Two-stroke engines produce higher emissions than four-stroke engines, making them less environmentally friendly.

Conclusion:

The KTM SX 150cc with the big piston kit offers increased power, better performance, and a fun riding experience. However, it comes with a higher cost, complexity, increased fuel consumption, noise, and emissions. Ultimately, the decision to buy this bike depends on the rider's preferences and priorities. If you are looking for a high-performance dirt bike and are willing to accept the cons, then the KTM SX 150cc with the big piston kit is a great choice. If you are looking for a more affordable, eco-friendly, or quieter option, then you may want to consider a four-stroke dirt bike instead.

Details:

Open box Ktm factory 150 kit, SXS16150000 kit.

part #: sxs16150000 price

  • $300.00

specifications pistondon:

  • for models: 125sx
  • for makes: Ktm
  • mpn: Sxs16150000
  • engine type: 2-stroke
  • type: Piston
  • machine type: Off-road Motorcycle
  • items included: Gasket
  • vintage part: No
  • performance part: Yes

returns pistondon:

  • policy: No Returns

shipping pistondon:

  • cost: $27.80
  • class: Expedited
  • carrier: USPS
  • service: USPS Priority Mail
  • transit: 6-12 Days
  • type: Calculated

payments pistondon:

  • credit card: Mastercard
  • wallet: Apple-pay
  • other

general pistondon:

  • condition: New
  • Motorcycle Scooter Parts Accessories > Engines Engine Parts > Pistons, Rings Piston Kits

offer pistondon:

  • started: November 6, 2025
  • quantity: 1
  • sold: 0
  • options: Ship-to-home
  • availability: In Stock
  • best offers: True

seller pistondon:

  • city: San Diego, California
  • # reviews: 182
  • rating: 100.0%
for models: 125sx, for makes: ktm, engine type: 2-stroke, type: piston, machine type: off-road motorcycle, items included: gasket, vintage part: no, performance part: yes,
category: motorcycle parts > motorcycle scooter parts accessories > engines engine parts > pistons, rings piston kits, sku: 8798998270455771,

Ktm SXS16150000 Is Similar To:

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2 offers $300.00–$300.00 USD
  • Offer #1: $300.00 price + $0.00 shipping estimate = $300.00* total. 2017-2019 TX 125. 2016-2022 125sx xc KTM PhatheadRacing Orange Head.FREE SHIPPING
  • Offer #2: $300.00 price + $0.00 shipping estimate = $300.00* total. 2016-2022 TC 150. 2016-2022 150sx xc KTM Brown PhatheadRacing Head Kit.FREE SHIPPING

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