HONDA 12204-MC1-305 Top Engine End Cylinder Head

( Manufacturer Part Number: 12204-MC1-305 ), ( Type: Cylinder Head )

Review HONDA Oem Engine Top End Cylinder Head fits CBR929 2001–2003

The Honda CBR929 engine top end cylinder head, part number 12204-MC1-305, is a critical component of the iconic Honda CBR929R motorcycle engine produced between 2001 and 2003. This cylinder head is specifically designed to fit the inline-four, 918cc liquid-cooled engine, bringing power and efficiency to the legendary motorcycle.

The cylinder head is meticulously crafted from high-grade aluminum alloy, ensuring optimal heat dissipation and lightweight construction. It houses four combustion chambers, each equipped with a durable, high-performance intake and exhaust valve. The intake valves boast a diameter of approximately 35mm, while the exhaust valves measure around 28mm in diameter.

The cylinder head comes with Honda's proprietary Unicam (UNI-PORT and CAM) system, which combines intake and exhaust ports into a single unit, streamlining the airflow between the cylinders and improving engine performance. The Unicam design also enhances the cylinder head's overall compactness, contributing to the engine's overall power-to-weight ratio.

In addition, the cylinder head features a superior design for the valve actuation system. Honda's Roller Rocker Arms provide smoother valve operation, reducing friction and improving engine efficiency. The rocker arms are also designed to last longer than traditional flat-top rocker arms, providing better durability and reliability.

The cylinder head comes with pre-installed spark plugs and valve adjusters, making the installation process more straightforward for technicians and DIY enthusiasts. The spark plugs are fine-tuned for optimal ignition performance, ensuring a consistent and powerful combustion process. The valve adjusters, on the other hand, enable precise valve clearance adjustments, ensuring optimal engine performance and longevity.

This Honda CBR929 engine top end cylinder head is a high-performance, durable, and efficient component that plays a crucial role in the overall operation of the motorcycle engine. Whether you're a seasoned mechanic, a motorcycle enthusiast, or a professional race team, this cylinder head is an essential upgrade or replacement for your Honda CBR929R motorcycle.

Buying a Honda CBR929 engine top end cylinder head from the year 2001-03 (model number 12204-MC1-305) for your motorcycle can be an effective solution in case you encounter issues with your engine's performance or if you are planning to upgrade its power output. In this response, we will discuss the potential advantages and disadvantages of purchasing this cylinder head.

1. Enhanced Performance: A new top end cylinder head can lead to improved engine performance, including increased horsepower and torque. This can result in a more responsive and faster motorcycle.

2. Better Fuel Efficiency: A well-maintained engine runs more efficiently, which can lead to better fuel economy. Installing a new cylinder head can ensure that your engine is running at optimal efficiency.

3. Longer Engine Life: A worn-out cylinder head can lead to premature engine failure. By replacing it with a new one, you can potentially extend the life of your engine.

4. Improved Engine Sound: A new cylinder head can alter the engine's sound, providing a more pleasing and powerful exhaust note.

1. Cost: A new cylinder head can be a significant investment, especially if you are not experiencing major engine issues. The cost of the cylinder head, as well as any additional labor and parts required for installation, can add up.

2. Installation Complexity: Installing a new cylinder head can be a challenging task, especially for those without mechanical experience. It may require specialized tools and a significant amount of time.

3. Potential for Additional Issues: Installing a new cylinder head does not guarantee that all engine-related issues will be resolved. There may be additional components that also need to be repaired or replaced.

When considering the purchase of a Honda CBR929 engine top end cylinder head, it's essential to weigh the potential advantages and disadvantages. If you are experiencing significant engine performance issues or if you are planning a major engine upgrade, the benefits of a new cylinder head may outweigh the costs. However, for those without major engine concerns, it may be worth exploring alternative, less expensive methods to improve motorcycle performance.

Before purchasing a new cylinder head, it's recommended to consult with a professional mechanic or Honda dealership to assess the condition of your engine and determine if a new cylinder head is the best solution for your situation. They can provide you with an accurate diagnosis and offer alternative options if a new cylinder head is not necessary. Additionally, consider researching local motorcycle forums or online marketplaces for used cylinder heads, which may be a more cost-effective solution.

Details:

See pictures for details. 2001 03 HONDA CBR929 OEM ENGINE TOP END CYLINDER HEAD, This cylinder head is in very good condition and shows normal signs of wear. Removed From: 2001 Honda CBR929RR with miles, Please review all pictures to assess the condition of item. Nice clean head.

Comes with everything shown.

part #: 12204mc1305 price

• $300.00

specifications cylindermotorcycleiz:

• for models: Cbr929
• for makes: Honda
• for years: 2001-2003
• mpn: 12204-mc1-305
• type: Cylinder Head

offer cylindermotorcycleiz:

• best offers: True
• quantity: 1
• availability: In Stock
• options: Ship-to-home
• started: December 12, 2025
• sold: 0

seller cylindermotorcycleiz:

• # reviews: 2906
• rating: 99.6%
• city: Millwood, Kentucky

returns cylindermotorcycleiz:

• paid by: Buyer
• time: 30 Days
• policy: Returns Accepted

shipping cylindermotorcycleiz:

• service: Standard
• class: Standard
• cost: $0.00
• transit: 4-8 Days
• type: Fixed

payments cylindermotorcycleiz:

• wallet: Paypal
• credit card: Visa
• other

general cylindermotorcycleiz:

• condition: Used
• Motorcycle Scooter Parts Accessories > Engines Engine Parts > Cylinder Heads

Honda 12204-MC1-305 Is Similar To:

• 00-00000-000 Honda Cylinder Jug Power Valves Billet Cover Barrel Top End (25.9% similar) 2001 honda CR250 cylinder assembly free shipping needs new sleeve - cracked power valves billet cover hardware see pictures for condition last pic shows the crack may fit other years model's...(September 17th, 2018)
• 00000000000 Honda Xr Cylinder Head Rare (39.6% similar) Honda XR 200R XR200R cylinder head rare for rebuild no cracks or stripped threads, should have new valves etc during rebuild, priced to sell, cam included, ships as shown in pictures tagged model year, ask all questions prior buying...(August 24th, 2018)
• 03-04-05-06-07-08-09-10-11-12-13-14-15-honda-1993 Honda Bolt Kit Engine Motor Screw Hardware Nut (25.8% similar) Thanks and ride safe. XR650L this is the majority of engine bolts. The bolts should fit these model's. Bolt kit engine motor screw hardware nut XR650L this is a set of bolts that were pulled off 2000 honda...(March 6th, 2018)
• 03 04 05 06 07 08 12210-mch-700 Honda Front Cylinder Head Cam Cover Oem (33.3% similar) Item may arrive disassembled for shipping purposes. Every person makes mistakes the difference is how mistake handled. The item will show signs of use. Please view pictures closely. Purchasing a used item:this is item. Most items are shipped via FedEx or USA postal service USPS. The advantage of ...(November 1st, 2018)
• 07-08-09-10-11-12-13-14-15-honda-12200-my6-670 Honda Cylinder Head Valve Top End (25.9% similar) XR650L the condition is good in head assembly ready for use. Cylinder head valve top end XR650L this is a assembly that was pulled off 2000 honda. The valves are included and oik to be in pretty good shape...(March 6th, 2018)
• 07-08-09-12-13-14-15-honda-12200-kbg-671-engine Cylinder Head Valve Top End Rebel (41.9% similar) Cylinder head valve top end CMX250C rebel this is a with cam towers and rockers that was pulled off 2005 honda. The camshaft is not included with this listing. The listing will include cylinder head, valves, camp towers and rockers. The part number shows it will fit these model's. CMX250C rebel ...(February 26th, 2018)
• 0934 Trail Bikes Honda Race Head Kit To Current (22.8% similar) High performance race camshaft for the head only gasket kit. Includes all necessary parts and comes assembled. It now has 25 22MM valves with better porting flow. Race head has been updated for even more performance. This kit is for upgrading 88CC bore kits with a stock head to the race. Also has ...(August 9th, 2018)
• 0949-0273-0189-0251-0186 Trail Bikes Honda Years To Tb Race Head Upgrade Kit (25.2% similar) ...(May 17th, 2018)
• 10004-pge-a21 Honda Oem Acccura Cl Coupe Cylinder Head (43% similar) 2l 6CYL w manual trans...(July 5th, 2018)
• 10007-k03 Cylinder Works Std Piston Kit For Honda Crf (28.3% similar) Please for a shipping quote to these destinations. Keep all packaging materials and the original shipping box. Free ground shipping applies to lower 48 contiguous states only...(May 22nd, 2018)
• 1060996 Honda Engine Top End Cylinder Head Cover Valve Rash (54% similar) Each part is systematically placed to be easily located once purchased. More options available upon request. Many countries only allow 79 max package length and girth combined. If the item does not fit motorcycle model's specified in listing...(April 4th, 2018)