1. In-Car Technology, GPS & Security Devices Parts
  2. sku: 4267099151297603
  3. HARLEY DAVIDSON 18538-99A

HARLEY-DAVIDSON 18538-99A High Tappets Vvt Cvo Qs 121

fits model: M8, Screamin, Eagle, Road, Glide. make: Eagle, Harley.

18538-99a Harley-davidson M8 Screamin Eagle High Capacity Tappets Oem 121 Vvt Cvo Road Glide Qs

( Brand: Harley-davidson ), ( Manufacturer Part Number: 18538-99A ), ( Part Type: Tappet )

Review HARLEY DAVIDSON High Capacity Tappets Oem 121 Vvt Cvo Qs fits SCREAMIN EAGLE ROAD GLIDE M8

Introducing the Harley-Davidson 18538-99A M8 Screamin' Eagle High Tappet VVT (Variable Valve Timing) CVO Road Glide QS engine kit, a powerful upgrade for your Harley-Davidson Touring motorcycle. This factory-installed, factory-warranted performance kit is exclusively available from Harley-Davidson's Custom Vehicle Operations (CVO).

At the heart of this kit lies the M8 engine, a high-performance version of the proven Twin Cam 121 engine. The M8 engine features high-performance cylinder heads with 4-valve-per-cylinder design and Screamin' Eagle high-performance camshafts. The Variable Valve Timing (VVT) system optimizes intake and exhaust valve timing for improved performance and torque across the entire RPM range.

The high tappet design of the valvetrain in this kit provides increased valve control and improved engine response. The result is a more powerful and responsive engine that delivers an exhilarating riding experience. The engine produces approximately 115 ft-lbs of torque and 118 horsepower, offering a significant improvement over the standard engine.

The M8 Screamin' Eagle High Tappet VVT engine kit also includes a number of other performance enhancements. These include a high-performance air cleaner system, a high-performance intake, and a high-performance exhaust system. The exhaust system features a 2-into-1 design with a tuned muffler that delivers a powerful and distinctive exhaust note.

The CVO Road Glide QS motorcycle that this engine kit is designed for is already a premium touring bike, and the addition of this high-performance engine takes it to the next level. The bike comes with a number of custom features, including a custom paint job, custom seat, and custom wheels.

In summary, the Harley-Davidson 18538-99A M8 Screamin' Eagle High Tappet VVT CVO Road Glide QS engine kit is a powerful and exclusive upgrade for your Harley-Davidson Touring motorcycle. It offers increased performance, improved torque, and a more responsive riding experience, all backed by Harley-Davidson's factory warranty. If you're looking to take your Harley-Davidson to the next level, this engine kit is an excellent choice.

Pros and Cons of Buying Harley-Davidson 18538-99A M8 Screamin' Eagle High Tappets 121 VVT CVO Road Glide QS

The Harley-Davidson 18538-99A M8 Screamin' Eagle High Tappets 121 VVT CVO Road Glide QS is a powerful and customized motorcycle engine that offers enhanced performance. Here are some pros and cons to consider before making a purchase.

Pros:

1. Enhanced Power and Performance: The high-performance engine delivers increased power and torque, resulting in a thrilling riding experience.

2. Customized Look and Feel: The CVO (Custom Vehicle Operations) Road Glide QS comes with a unique and distinctive look, including custom paint and chrome accents.

3. Improved Fuel Efficiency: The VVT (Variable Valve Timing) system helps optimize engine performance, leading to improved fuel efficiency compared to previous models.

4. Smooth and Refined Ride: The high-tappet engine design provides a smoother and more refined ride, reducing vibration and engine noise.

5. Increased Resale Value: The customized features and high-performance engine make this motorcycle a desirable collectible, potentially increasing its resale value.

Cons:

1. High Cost: The Harley-Davidson 18538-99A M8 Screamin' Eagle High Tappets 121 VVT CVO Road Glide QS is a premium motorcycle engine and comes with a premium price tag.

2. Limited Availability: Due to its customized nature, this motorcycle engine may not be widely available and may require special ordering.

3. Complex Installation: Installing this engine requires specialized knowledge and skills, making it a challenging DIY project for most riders.

4. Increased Maintenance: A high-performance engine like this one may require more frequent maintenance and upkeep to ensure optimal performance.

5. Heavier Weight: The increased power and size of the engine add to the overall weight of the motorcycle, potentially impacting handling and maneuverability.

Conclusion:

The Harley-Davidson 18538-99A M8 Screamin' Eagle High Tappets 121 VVT CVO Road Glide QS is a high-performance, customized motorcycle engine that offers a thrilling riding experience. However, it comes with a high cost, limited availability, and increased maintenance requirements. Ultimately, the decision to purchase this engine depends on your budget, riding style, and preference for a unique and powerful motorcycle.

Recommendation:

If you are a serious Harley-Davidson enthusiast and are looking for a high-performance, customized motorcycle engine, the 18538-99A M8 Screamin' Eagle High Tappets 121 VVT CVO Road Glide QS could be an excellent investment. However, consider the high cost, limited availability, and complex installation before making a purchase. If you are on a budget or prefer a more standard motorcycle engine, there are other options available that may better suit your needs.

Details:

Designed for quiet operation and stable performance. Factory equipment on 2023 CVO Road Glide 121 VVT. There is no scoring, pitting, or discoloration on the rollers bodies. Heat treated bearing needles and axle for durability.

Harley uses this high capacity lifter design on CVO model's for improved durability, featuring a larger needle bearing pack and heat treated components to handle the increased load of 121 VVT valve train. Larger needle bearing pack for increased load capacity. Fitment is confirmed only for the 2023 Harley Davidson CVO Road Glide FLTRXSE from which these tappets were removed. These are OEM Harley Davidson Screamin Eagle High Capacity hydraulic tappets removed from a 2023 CVO Road Glide FLTRXSE equipped with the 121 VVT engine.

The rollers rotate smoothly with no noise, drag, or flat spots. I cannot guarantee compatibility with any other model, year, or engine configuration. Genuine Harley Davidson Screamin Eagle High Capacity hydraulic tappets.

part #: 1853899a prices

  • $20.30-$150.00

specifications incartechno:

  • for models: M8, Screamin, Eagle, Road, Glide
  • for makes: Eagle, Harley
  • brand: Harley-davidson
  • mpn: 18538-99a
  • part type: Tappet

returns incartechno:

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

seller incartechno:

  • # reviews: 9413
  • rating: 99.6%
  • city: Sterling, Illinois

shipping incartechno:

  • cost: $9.99
  • carrier: USPS
  • service: USPS First Class
  • type: Fixed
  • transit: 4-8 Days
  • class: Standard

offer incartechno:

  • started: February 26, 2026
  • availability: In Stock
  • quantity: 1
  • sold: 0
  • options: Ship-to-home
  • best offers: True

general incartechno:

  • condition: Used
  • Parts Accessories > In-Car Technology, GPS Security > Other In-Car Technology

payments incartechno:

  • other
  • credit card: Visa
  • wallet: Apple-pay
for models: m8, screamin, eagle, road, glide, for makes: eagle, harley, part type: tappet,
category: auto parts > in-car technology, gps security > in-car technology, sku: 4267099151297603,

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