Cylinder Head Top Cover for KTM EXC Husqvarna TE GAS GAS EC 250 2024-2025

Features:

• Features an upgraded combustion chamber design that delivers more power across the entire RPM range and reduces the risk of detonation. Designed and tested to operate on 91+ octane fuel. The head comes with a complete head gasket kit.
• Compared with the stock head insert: Original compression before installation is approximately 170 PSI, approximately 183 PSI after installation (as shown), and the squish clearance is 1.2mm.
  
• Made of 7075 aluminum, capable of withstanding high pressures and temperatures, so it will not crack under pressure.
  
• Consistent power gains throughout the rev range, especially low/mid-range:
  
• Improved fuel economy
  
• Greatly reduced risk of detonation
  
• Improved engine life
  
• Smoother power delivery
  
• Does not require race fuel
  

Item Specifications:

Brand: NICECNC
Condition: 100% Brand New
Material: 7075 Aluminum
Processing: CNC-machined
Caps Surface: Anodized

Disclaimer/Liability Statement:

• These products are intended for closed course competition use only.
  
• It is the owner's responsibility to ensure that the jetting/fueling is appropriate for local weather and conditions to prevent engine damage.
  
• We are not responsible for any damage, injury, or loss arising from the use of these products.
  

Package Included:
1x Cylinder Head Kit

Fitment:
For KTM 250 EXC 2024-2025
For Husqvarna TE250 2024-2025
For GAS GAS EC250 2024-2025

Installation Guide:

1. Drain coolant and remove stock head.
2. 2Adjust deck height as required using different base gaskets. Deck height is the distance from the top of the cylinder to the top outside edge of the piston at top dead center (TDC).
   
3. Fit the new head O-ring on top of the cylinder, ensuring the locating dowel is correctly seated.
   
4. Insert the supplied 23 x 2.5mm O-ring into the groove on top of the combustion chamber insert. Place the outer “cap” part of the head over the insert, taking care not to displace the O-ring. Finger-tighten the spark plug into the top of the insert. Hold the spark plug and lift the cylinder head as one unit onto the cylinder. Carefully position the cylinder head, ensuring the locating dowels are aligned and the O-ring remains in place.
5. Tighten the nuts/bolts in a crisscross pattern to the torque specified in your service manual. Reinstall the cylinder head to chassis mounting bracket.
   

Testing Data:

• Test Vehicle: 2024 KTM 250 EXC
  
• Operating Time: 1 hour
  
• Raw Compression: Approx. 170 PSI
  
• Compression with NICECNC part: Approx. 183 PSI
  
• Compression test data may vary from vehicle to vehicle due to different
• operating times.
  

Disclaimer:

Nicecnc parts are not sponsored or endorsed by, or affiliated with the brands its parts fit, including KTM, Husqvarna, Honda, Yamaha, Kawasaki, Suzuki, Beta, GASGAS, Sherco, etc.