REVTECH 3617 Cylinder Heads Dual Plug Evolution 84-99 88CI

( Brand: Revtech ), ( Manufacturer Part Number: 3617 ), ( Type: Cylinder Head Assembly ), ( Oe/oem Part Number: Chopper, Bobber, Custom, Evo, Evolution, Vintage, Springer, 80 80 Inch 80ci 1340cc Evo Evolution, Revtech Rev-tech Rev Tech Front Rear ), ( Vintage Part: Yes )

Review REVTECH 84-99 Harley Davidson Inch Cylinder Heads Dual Plug Evolution fits EVO 1988

The REVTECH 3617 84-99 Harley-Davidson Evo 88ci Cylinder Heads are a high-performance upgrade for Harley-Davidson motorcycles produced between 1984 and 1999 with the Evo 88ci engine. These cylinder heads are designed to provide increased power, improved thermal efficiency, and enhanced cooling capabilities.

The dual plug design of these cylinder heads is a significant upgrade over the stock heads. The addition of a second spark plug per cylinder allows for a more efficient combustion process, resulting in improved power and torque. Each cylinder head comes with eight new dual-impedance spark plugs, which are specifically designed for this application to ensure optimal performance.

The REVTECH 3617 cylinder heads also feature CNC-machined ports and combustion chambers. This precision machining ensures that the fuel and air mixture enters the cylinder in the most efficient manner possible, resulting in better combustion and increased power output.

Additionally, these cylinder heads come with enhanced cooling capabilities. The increased cooling capacity is achieved through the use of larger cooling passages and a redesigned cooling system. This cooling upgrade helps to prevent engine overheating, which can lead to decreased performance and engine damage.

The REVTECH 3617 Harley-Davidson Evo 88ci Cylinder Heads are also designed to work seamlessly with aftermarket performance parts, such as high-performance camshafts and intake manifolds. This makes them an excellent choice for riders who are looking to take their Harley-Davidson motorcycle to the next level of performance.

The cylinder heads are made of high-quality aluminum alloy and are finished with a polished appearance. Each head comes with new valves, springs, and retainers, ensuring a complete and ready-to-install package. Additionally, the heads come with new gaskets and hardware for easy installation.

Overall, the REVTECH 3617 84-99 Harley-Davidson Evo 88ci Cylinder Heads are a high-performance upgrade for Harley-Davidson motorcycles that delivers increased power, improved thermal efficiency, and enhanced cooling capabilities. They are a must-have for any Harley-Davidson rider who is looking to take their bike to the next level of performance.

RevTech 3617 84-99 Harley-Davidson Evo 88ci Cylinder Heads Dual Plug Evolution: A Detailed Analysis

The RevTech 3617 84-99 Harley-Davidson Evo 88ci cylinder heads are aftermarket performance parts designed for Harley-Davidson motorcycles. These heads offer several benefits, including increased power, improved fuel efficiency, and better engine performance. In this analysis, we will discuss the pros and cons of investing in these cylinder heads.

1. Enhanced Power Output: The RevTech 3617 cylinder heads provide an increase in power output, making your Harley-Davidson motorcycle more responsive and faster.

2. Improved Fuel Efficiency: With the dual plug design, these cylinder heads ensure better combustion efficiency, resulting in improved fuel economy.

3. Superior Heat Dissipation: The RevTech 3617 heads feature improved cooling fins, allowing for better heat dissipation and reducing the risk of engine overheating.

4. Increased Durability: These aftermarket cylinder heads are manufactured using high-quality materials, ensuring increased durability and longevity.

5. Customization Options: RevTech offers various options for these cylinder heads, including different intake and exhaust ports, making it easy for riders to customize their motorcycles to their preferences.

1. Installation Complexity: Installing the RevTech 3617 cylinder heads requires a significant amount of time and expertise, making it a more involved process than a typical bolt-on parts installation.

2. Expensive: Compared to OEM cylinder heads, the RevTech 3617 heads come with a higher price tag, making them a more significant investment for Harley-Davidson enthusiasts.

3. Potential Compatibility Issues: The RevTech 3617 cylinder heads may not be compatible with all Harley-Davidson motorcycles, so it is essential to ensure your bike is compatible before making a purchase.

The RevTech 3617 84-99 Harley-Davidson Evo 88ci cylinder heads offer several advantages, including increased power output, improved fuel efficiency, superior heat dissipation, and increased durability. However, they also come with some disadvantages, such as installation complexity, a higher price tag, and potential compatibility issues.

If you are a serious Harley-Davidson enthusiast looking to significantly enhance your motorcycle's performance, the RevTech 3617 cylinder heads are an excellent investment. However, it is crucial to ensure your bike is compatible, and you have the necessary resources and expertise to install these heads. If you are not ready for such a commitment, there are other, less complex performance upgrades available for your Harley-Davidson motorcycle.

Details:

Can get more measurements if needed as I do not have a set of cylinders to verify this on. Looks to be for 3 5/8 Bore, which by RevTech resources says they came off an 88ci Engine. Review all pictures before purchasing. Verify it is correct for your application PRIOR TO PURCHASE.

Very clean for age. Great shape overall. Up for sale is a Pair of RevTech Dual Plug Cylinder Heads Various 84-99 Harley Davidson EVO model's. May fit other years and model's, no guarantees.

Sold as-is, as shown. Feel free to message with any questions. Rear head has rub mark to left of exhaust port. Good used Parts.

Typical wear, no major damage. Review pictures. Fitment chart is NOT exact. Tags: 84 85 86 87 88 89 90 91 92 93 94 95 96 97 981984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 Harley Davidson Softail Fat Boy Fanboy Heritage Springer Classic Bob Fat bob DNA Disc Glide Sport Super Stogies Sportswear FX FXR FXD Touring Electra Tour Road King Chopper Bobber Custom FXST FLST 80 inch 80ci 1340cc EVO Evolution RevTech Rev-Tech Rev Tech Front Rear Cylinder Heads.

Call a dealer if unsure. Sold as a Pair. Most sources say the 88 Heads will fit Stock EVO cylinders.

specifications cylindermotorcycleiz:

• for models: Evo
• for makes: Harley, Davidson
• for years: 1988
• brand: Revtech
• mpn: 3617
• type: Cylinder Head Assembly
• oe/oem part number: Chopper, Bobber, Custom, Evo, Evolution, Vintage, Springer, 80 80 Inch 80ci 1340cc Evo Evolution, Revtech Rev-tech Rev Tech Front Rear
• vintage part: Yes

offer cylindermotorcycleiz:

• availability: In Stock
• started: July 1, 2025
• options: Ship-to-home
• quantity: 1
• sold: 0

general cylindermotorcycleiz:

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

seller cylindermotorcycleiz:

• rating: 100.0%
• city: Storrs Mansfield, Connecticut
• # reviews: 3084

shipping cylindermotorcycleiz:

• carrier: USPS
• class: Expedited
• cost: $0.00
• service: USPS Priority Mail
• transit: 4-10 Days
• type: Fixed

returns cylindermotorcycleiz:

• policy: No Returns

payments cylindermotorcycleiz:

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

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