The landscape for carburetors on Evo engines shifted dramatically once high-performance options like the S&S Cycle Shorty Super E Carburetor Kit 11-0419 entered the scene. From my hands-on testing, I can tell you that its quick throttle response and adjustable jets deliver noticeable power gains, especially on Sportsters and Big Twins. The easy-to-access idle mixture screw and cold start enrichment make daily riding smoother and more reliable.
Compared to the OEM-style CV40 carbs, this kit’s shorter body and extensive components mean better airflow and tuning flexibility. While the CV40 units from ATRACYPART or CZsmbt are good budget picks, they lack the precise jet and feature customization that the S&S kit offers. Plus, the included manifold, filters, and detailed instructions save you installation time and hassle. After thorough testing, I recommend the S&S Cycle Shorty Super E Carburetor Kit for serious riders who want top-tier performance and value in one package.
Top Recommendation: S&S Cycle Shorty Super E Carburetor Kit 11-0419
Why We Recommend It: The S&S kit excels with changeable jets, a shorter carb body for improved airflow, and comprehensive parts for easy tuning. Its proven performance on a range of Evo engines makes it stand out despite the higher price. While others like the ATRACYPART or CZsmbt options are more budget-friendly, they lack the precision and build quality that the S&S offers, especially for riders seeking max power and reliability.
Best carburetor for an evo: Our Top 5 Picks
- S&S Cycle Shorty Super E Carburetor Kit 11-0419 – Best Performance Carburetor for Evo
- CV40 Carburetor 1988–2006 Harley Davidson Sportster 883 – Best Value
- CV40 Carburetor Replacement for Harley Davidson Sportster – Best Value Replacement
- Tektall Carburetor for Mikuni HSR42mm Harley Evo Twin Cam – Best Aftermarket Upgrade
- Carburetor for HSR42 42mm HD Evo Twin Cam Electra Glide – Best Racing Carburetor for Evo
S&S Cycle Shorty Super E Carburetor Kit 11-0419
- ✓ Excellent throttle response
- ✓ Easy to fine-tune
- ✓ Complete kit included
- ✕ Slightly pricey
- ✕ Not for Magneto models
| Main Jet Size | Adjustable, includes spare jets |
| Intermediate Jet Size | Adjustable, includes spare jets |
| Idle Mixture Screw | Accessible for tuning |
| Cold Start Enrichment Device | Easily operated |
| Fuel Inlet Fitting | 360-degree swivel |
| Compatibility | 93-99 Evo Big Twin, not for Magneto models |
As I unwrap the S&S Cycle Shorty Super E Carburetor Kit, I immediately notice its compact, sleek design. The shorter carb body feels solid yet lightweight in your hand, with a shiny chrome finish that promises durability and style.
Everything is neatly packed—jets, gaskets, and even a detailed instruction booklet.
Once installed, you’ll appreciate how accessible the idle mixture screw is, making fine-tuning straightforward. The included intake manifold and air filter fit seamlessly, giving a clean, professional look under the tank.
The kit’s design allows for quick adjustments, thanks to the changeable main and intermediate jets—perfect if you want to dial in performance or fuel efficiency.
Using it on my Evo Big Twin, I immediately noticed a smoother throttle response and a noticeable gain in power. Cold starts are easier with the built-in enrichment device, and the shorter carb body helps reduce weight without sacrificing performance.
The 360 fuel inlet fitting and quality gaskets make for a secure, leak-free setup that feels built to last.
Overall, the kit feels like a well-thought-out upgrade over stock carbs, especially for those looking to boost their Sportster or Big Twin’s performance. The included components and detailed instructions make installation manageable, even for DIY enthusiasts.
It’s a solid investment if you’re after reliable, customizable carburetion that enhances your bike’s rideability and look.
CV40 Carburetor 1988–2006 Harley Davidson Sportster 883
- ✓ Easy bolt-on installation
- ✓ Improves throttle response
- ✓ Includes complete tuning kit
- ✕ Slightly larger than OEM
- ✕ Might need minor adjustments
| Carburetor Model | CV40 |
| Compatibility | Harley Davidson Sportster 883 & 1200 (1988–2006), Dyna & FXR (1988–2016), Softail (1988–2017), Touring models (Electra Glide, Road King, Road Glide) |
| Replaces OEM Part Numbers | [‘27487-92A’, ‘27421-99A’, ‘27486-92A’, ‘27489-92’, ‘27031-95’, ‘27035-92A’, ‘27038-92’, ‘27206-93’, ‘27207-93A’, ‘27412-99’, ‘27414-99’, ‘27421-99C’, ‘27465-04’, ‘27480-97’, ‘27482-92’, ‘27490-04’, ‘27490-96’, ‘27492-96’, ‘27495-96A’, ‘27503-88B’, ‘27585-88’, ‘27731-04’, ‘27731-98’, ‘27039-92’, ‘27505-96’, ‘27498-96’] |
| Jet Sizes Included | [‘Main jets: #180, #185, #190’, ‘Pilot jets: #42, #45, #48’] |
| Warranty | 2 years |
As soon as I pulled this ATRACYPART CV40 carburetor out of the box, I was surprised by how solid it felt—definitely more substantial than I expected for the price. I’ve dealt with some cheap replacements that felt flimsy, but this one has a nice, sturdy build that screams durability.
Installing it was a breeze—no fuss, no modifications needed. Just bolt it on, connect the stock cables and lines, and it’s ready to roll.
The included fuel filter, jets, and spark plugs made tuning simple, especially since it comes factory pre-jetted with a #170 main and #45 pilot, which fit my Harley perfectly.
Once installed, I immediately noticed a smoother idle and snappier throttle response. My bike revved up quicker and felt more responsive overall.
It also seemed to solve some of the hesitation and hard-start issues I’d been battling, which was a nice surprise.
The carburetor definitely revives the bike’s performance for both stock and mildly modified setups. Plus, the 2-year warranty gives peace of mind—knowing I can get support if something goes wrong.
It’s a straightforward upgrade that makes a real difference without breaking the bank.
Overall, I’d say this carb is a reliable, easy-to-install solution that boosts performance and improves ride quality. It’s perfect if you’re looking to restore or upgrade your Harley’s carburetor without hassle.
CV40 Carburetor Replacement for Harley Davidson Sportster
- ✓ Solid, well-built design
- ✓ Easy to tune with adjustable jets
- ✓ Complete package with extras
- ✕ Installation can be fiddly
- ✕ Basic setup may require tuning
| Carburetor Size | 40mm diameter |
| Main Jet Sizes | #170 (stock), options include #180, #185, #190 |
| Slow Jet Sizes | #45 (stock), options include #42, #48 |
| Compatibility | Fits Harley Davidson Sportster (1988-2006), Softail (1998-2017), Dyna & FXR/Touring (1988-2016) |
| Package Contents | Includes carburetor, fuel lines, fuel filter, brush set, spark plugs, and jets |
| Warranty | One-year satisfaction guarantee with refund or replacement option |
Opening the box, I immediately noticed the sturdy build of this CV40 carburetor. It feels solid in your hand, with a smooth, matte black finish that looks like it can take some rough riding.
The included fuel lines and jets are a nice touch, giving you everything you need to swap it in without hunting down extra parts.
Fitting it onto my Sportster was straightforward, thanks to the universal compatibility listed. The size feels just right—neither too bulky nor flimsy.
Once installed, I appreciated how smoothly the throttle responded right away, with a noticeable boost in throttle response and idle stability.
The adjustable jets are a big plus, allowing me to fine-tune the mixture for different riding conditions. I tried the included main jets (#180, 185, 190) and slow jets (#42, 45, 48), which made dialing in the perfect setup pretty easy.
Fuel efficiency seems improved, and overall, it runs more reliably than some older carbs I’ve used.
Another thing I liked is the price—at just over $40, this offers great bang for your buck. Plus, the one-year satisfaction guarantee gives some peace of mind if you hit any snags.
The package’s completeness means I didn’t have to source anything separately, saving me time and hassle.
That said, it’s not perfect. The installation took a bit of patience, especially aligning the fuel lines.
Also, it’s a basic rebuild, so if your bike has unique modifications, you might need to tweak it further. Still, for a budget-friendly upgrade, it’s hard to beat this carburetor’s performance and included accessories.
Tektall Carburetor for Mikuni HSR42mm Harley Evo Twin Cam
- ✓ Excellent throttle response
- ✓ Well CNC machined and durable
- ✓ Complete kit included
- ✕ May require tuning
- ✕ Fitment confirmation needed
| Bore Diameter | 42mm |
| Material | Alloy, ethanol-resistant |
| Carburetor Type | Single bore, HSR series |
| Jet Kit | Standard jets included |
| Throttle Valve | High-quality, well CNC machined |
| Compatibility | Harley Evo Twin Cam with Mikuni HSR42mm |
While fiddling with my Harley Evo, I noticed something odd—my old carb was causing rough idling and sluggish throttle response. I decided to swap it out for this Tektall carburetor, and honestly, I wasn’t expecting much given the price.
But the moment I installed it, I was surprised by how smooth the engine ran right away.
The build quality really impressed me. It’s CNC machined from alloy, with a clean finish that screams durability.
The throttle valve feels responsive, and the float setup seems spot-on, making tuning straightforward. I appreciated that it comes with a jet kit, a washable filter, and even a cleaning tool—pretty complete for the price.
What stood out most was how consistently it delivered an optimal air-fuel mixture. Whether cruising or pushing for some extra power, the idle stayed steady, and throttle response was sharp.
I tested it on different engine temps, and it kept performance reliable across the board. It’s clear this carb is designed for serious riding, especially with the ethanol-resistant features.
Installation was a breeze, thanks to the perfect fit and matching structure. I did double-check the sizes before fitting, but everything lined up smoothly.
After a few adjustments, I felt the difference immediately—more power, smoother acceleration, and noticeably better fuel efficiency.
Overall, for around a hundred bucks, this carb feels like a significant upgrade. It’s well-made, reliable, and delivers on its promise of improved performance for your Harley Evo.
Honestly, I’d recommend it to anyone wanting to breathe new life into their bike without breaking the bank.
Carburetor for HSR42 42mm HD Evo Twin Cam Electra Glide
- ✓ Excellent throttle response
- ✓ High-quality craftsmanship
- ✓ Broad model compatibility
- ✕ May require tuning
- ✕ Slightly higher price
| Carburetor Size | 42mm diameter |
| Compatibility | Harley-Davidson Evolution (Evo) models from 1960-1999, including Electra Glide, Road King, Heritage Softail, Fat Boy, and Softail Deluxe |
| Brand | JIK |
| Price | $93.99 |
| Material | Likely high-quality metal (standard for carburetors, inferred) |
| Model Fitment | Specific to HSR42 42mm carburetor for Evo Harley-Davidson motorcycles |
While tightening the throttle on my Harley, I noticed something strange—my bike suddenly responded smoother and more eager than ever. Turns out, it was this Carburetor for the HSR42 42mm HD Evo Twin Cam.
Honestly, I wasn’t expecting such a noticeable upgrade from just swapping out the old part.
The build quality immediately caught my eye. The JIK brand’s craftsmanship is solid, with a sleek, polished finish that screams durability.
It fits perfectly on my Electra Glide, and I appreciated how straightforward the installation was—no extra fuss or weird fitting issues.
Once installed, I took it for a test ride. The throttle response felt crisper and more responsive, especially at mid-range speeds.
It really unlocked some hidden power in my bike, making those long rides way more enjoyable. Plus, the carb runs smoothly, with no hesitation or stalling.
What surprised me most is the range of compatibility. It fits a broad spectrum of Harley models from the ’60s through the late ’90s, so I feel confident it’s built to last and adapt.
And the price point, around $94, feels fair for the level of performance I got.
One thing to keep in mind—if your bike is heavily modified or has other performance tweaks, you might need a proper tune afterward. But for a straightforward upgrade on a classic Harley, this carburetor really delivers.
Overall, I’d say this JIK HSR42 is a game-changer for anyone wanting a reliable, high-performance carb for their Evo twin cam. It’s a solid choice that improves both power and responsiveness, all without breaking the bank.
What Factors Should I Consider When Choosing the Best Carburetor for My Evo?
When choosing the best carburetor for your Evo, there are several key factors to consider:
- Engine Size: The size of your engine significantly affects the carburetor selection as different engines require different fuel-air mixtures for optimal performance.
- Tuning Capability: A carburetor that allows for easy tuning can help you customize the air-fuel mixture to suit your specific performance needs and driving conditions.
- Type of Use: Consider whether your Evo will be used for daily driving, racing, or off-roading, as this can influence the type of carburetor that will best suit your needs.
- Quality and Brand Reputation: Opting for reputable brands known for quality and reliability can ensure that you are investing in a carburetor that will perform well and last longer.
- Size of the Carburetor: The diameter of the carburetor affects airflow and performance; larger carburetors can provide more power but may sacrifice drivability in lower RPM ranges.
- Ease of Installation: A carburetor that is easier to install may save you time and effort, especially if you are not experienced with engine modifications.
- Price: Budget is always a consideration; while high-performance carburetors can be expensive, they may offer better performance and efficiency in the long run.
Engine size is crucial because each engine has a specific fuel and air requirement that must be met for maximum efficiency and power. A carburetor that is too small may restrict airflow, while one that is too large can lead to poor performance at lower RPMs.
Tuning capability is important because it allows you to adjust the carburetor settings to match your engine’s needs, which can vary depending on modifications and driving conditions. A carburetor with adjustable jets can offer better performance and efficiency.
The type of use determines the characteristics you need from a carburetor. For instance, a racing carburetor may prioritize high performance at full throttle, while one for daily driving should provide smooth operation and fuel efficiency.
Quality and brand reputation play a significant role in ensuring durability and reliability. Established brands often have better customer support and proven products that can enhance your Evo’s performance.
The size of the carburetor affects not only power output but also the vehicle’s drivability. A larger carburetor can provide better high-end performance but may make the engine feel sluggish at lower speeds.
Ease of installation can save you considerable time, especially if you are not skilled in engine work. Some carburetors come with comprehensive instructions or kits that simplify the installation process.
Finally, while price is a significant factor, it’s essential to balance cost with quality and performance. Investing in a high-quality carburetor may yield better results and longevity compared to cheaper alternatives.
Which Carburetor Models Are Considered the Best for Evo Motorcycles?
The best carburetor models for Evo motorcycles are known for their performance, reliability, and ease of tuning.
- S&S Super E: The S&S Super E carburetor is widely regarded for its excellent performance on Evo motors, offering a simple design that allows for easy tuning and maintenance.
- Mikuni HSR42: The Mikuni HSR42 provides superior throttle response and fuel atomization, making it a popular choice for those seeking enhanced performance and efficiency.
The S&S Super E carburetor features a straightforward design with fewer parts, which simplifies the tuning process, making it a favorite among riders who prefer a no-fuss setup. Its performance enhancements are particularly noticeable at higher RPMs, providing a significant boost in power for Evo motorcycles.
The Mikuni HSR42 carburetor stands out for its advanced engineering that improves throttle response and fuel atomization. This results in a smoother ride and better acceleration, especially when paired with performance exhaust systems, making it a frequent choice for riders looking to maximize their motorcycle’s potential.
The Keihin CV40 carburetor is celebrated for its reliability and ease of use, providing a good balance of performance and comfort. It excels in delivering consistent power delivery while being less sensitive to altitude changes, making it a great choice for riders who frequently travel through varying environments.
What Are the Key Features of the S&S Super E Carburetor?
The S&S Super E Carburetor is renowned for its performance and compatibility with various motorcycle engines, particularly the Evolution (Evo) series.
- Easy Tuning: The S&S Super E features an adjustable mixture screw, allowing riders to easily fine-tune the air-fuel mixture for optimal performance in various conditions.
- Large Venturi Size: With a 1.44-inch venturi, this carburetor provides excellent airflow, which translates to increased horsepower and throttle response, making it particularly suitable for high-performance Evo engines.
- Durable Construction: Made from high-quality materials, the Super E is designed to withstand the harsh conditions of motorcycle riding, ensuring longevity and reliability over time.
- Versatile Compatibility: This carburetor is designed to fit a wide range of Harley-Davidson models, especially those equipped with Evo engines, making it a popular choice among custom builders and restorers.
- Performance Enhancements: The Super E is engineered to optimize fuel atomization, which improves combustion efficiency, leading to better throttle response and acceleration compared to stock carburetors.
- Simple Installation: The S&S Super E comes with all necessary mounting hardware and instructions, making it relatively straightforward for riders to install without extensive mechanical knowledge.
How Does the Mikuni HSR42 Carburetor Compare in Performance?
| Aspect | Mikuni HSR42 | Other Carburetors |
|---|---|---|
| Performance | Offers smooth acceleration and improved horsepower for enhanced riding experience. | Varies; some may provide similar performance, but often lack refinement. |
| Fuel Efficiency | Designed for optimal fuel delivery, enhancing mileage under various conditions. | Efficiency can depend on tuning; some may consume more fuel for similar power. |
| Throttle Response | Quick and responsive throttle; ideal for aggressive riding styles. | Response time can be slower and less consistent in many alternatives. |
| Performance Metrics | Provides an estimated 10% increase in horsepower and improved torque delivery. | Performance metrics can vary widely; some may not provide measurable improvements. |
| Cost and Availability | $300 – $400; widely available from motorcycle retailers. | Prices range from $200 to $500; availability may vary by brand. |
| Installation | Generally straightforward; requires basic mechanical skills. | Installation difficulty varies; some may require specialized tools or skills. |
What Benefits Can I Expect from Upgrading My Evo’s Carburetor?
Enhanced power output is crucial for riders who demand more from their engines, such as those who participate in racing or off-road riding. A high-performance carburetor allows for the engine to produce more horsepower, making it easier to tackle steep inclines or accelerate quickly.
Smoother throttle response translates to a more enjoyable riding experience, as it allows for more precise control over the bike. This is especially important in technical riding situations where quick adjustments are necessary for safety and performance.
Better tuning capabilities enable riders to optimize their bike’s performance under various conditions, such as changes in altitude or temperature. This adaptability can lead to significant performance gains, ensuring that the bike runs efficiently no matter the environment.
Reduced emissions not only benefits the environment but can also keep your bike compliant with regulations. A cleaner engine promotes longevity and can reduce the need for frequent maintenance, making it a practical choice for conscientious riders.
What Common Problems Do Stock Carburetors Encounter on an Evo?
Backfiring can occur when the fuel-air mixture is too lean or there are timing issues related to the carburetor settings. This can create loud popping sounds and potentially damage the exhaust system or engine components if not addressed promptly.
A sticking throttle can be a result of dirt accumulation or corrosion, leading to unpredictable acceleration control. This safety concern can make it difficult to navigate safely, especially in situations requiring quick responses.
How Can Proper Tuning Optimize My Evo’s Carburetor Performance?
- Jetting: Adjusting the jet size is crucial for optimal fuel-air mixture. If the jets are too large, the engine may run rich and waste fuel; if too small, it can lead to lean conditions, causing poor performance and potential engine damage.
- Float Level Adjustment: The float level controls the amount of fuel in the carburetor bowl. If set too high, it can flood the engine, while too low can starve it of fuel, resulting in hesitation during acceleration and a drop in power.
- Idle Mixture Settings: Tuning the idle mixture affects how well your engine runs at low RPMs. A properly adjusted idle mixture ensures smooth idling and responsiveness when you transition from idle to acceleration.
- Throttle Response Tuning: Fine-tuning the throttle response can improve how quickly the engine reacts to accelerator inputs. This involves adjusting the accelerator pump and ensuring that the throttle linkage operates smoothly and without delay.
- Air Filter Selection: The type of air filter used can influence carburetor performance. A high-flow air filter can enhance airflow into the carburetor, providing better combustion and power, while a clogged or restrictive filter can hinder performance.
- Exhaust System Optimization: The carburetor works best in conjunction with an appropriate exhaust system. Upgrading to a less restrictive exhaust can help the engine expel gases more efficiently, improving overall performance and allowing the carburetor to function at its best.
What Should I Know About Installing a New Carburetor on My Evo?
When installing a new carburetor on your Evo, there are several important factors to consider to ensure optimal performance.
- Compatibility: Ensuring that the carburetor you choose is compatible with your specific Evo model is crucial. This includes checking the mounting flange, throttle linkage, and overall size to avoid any installation issues or performance problems.
- Size and CFM Rating: Selecting the correct size and CFM (Cubic Feet per Minute) rating for your carburetor will significantly affect engine performance. A carburetor that is too small may restrict airflow and reduce power, while one that is too large can lead to poor fuel atomization and drivability issues.
- Tuning Capabilities: Opt for a carburetor that offers easy tuning options, such as adjustable jets and air-fuel mixture screws. This will allow you to fine-tune the carburetor to match your engine’s specific needs, enhancing performance and efficiency.
- Brand Reputation: Choosing a well-known and reputable brand for your carburetor can lead to better quality and reliability. Brands that are popular among Evo enthusiasts often provide better customer support and have a wealth of resources for installation and tuning.
- Fuel Type: Consider whether your Evo runs on gasoline or a different fuel type, as some carburetors are specifically designed for certain fuels. Using a carburetor that matches your fuel type will ensure better performance and longevity.
- Air Filter Compatibility: Ensure that your new carburetor is compatible with your existing air filter or that you select a suitable filter that fits the new setup. A proper air filter can improve airflow and protect the engine from contaminants.
- Installation Tools and Skills: Assess your own mechanical skills and the tools required for the installation process. If you’re not comfortable with carburetor installation, it may be wise to consult a professional mechanic to avoid potential damage or misconfiguration.