MOTO TASSINARI MN-W7P3 Reed Petals Delta Valve MN/W7P3

( Brand: Moto Tassinari ), ( Manufacturer Part Number: MN/W7P3 ), ( Compatible Year: 1986 1985 ), ( Compatible Model: Atc250es Big Red ), ( Bundle Description: 1 Pc Genuine Moto Tassinari Reed Petals For Delta V Reed Valve ), ( Type: Reed Petals For Delta V Reed Valve ), ( Core Charge: Free No Core Charge ), ( Fitment Type: Direct Replacement )

Review MOTO TASSINARI Mn/w7p3 Reed Petals Delta Valve Honda Eu fits 1985–1986

The **Moto Tassinari MN/W7P3 Reed Petals** are a meticulously engineered replacement component designed specifically for the **Delta valve** found in **1985 1986 Honda** engines, including models like the **Honda CB750F, CB900F, and other high-performance sport-touring bikes** of that era. Crafted from high-quality, durable materials, these reed petals are precision-cut to ensure optimal airflow while maintaining the original performance characteristics of the engine. The **MN/W7P3** designation indicates a specialized fit for the Delta valve system, which was known for its unique reed mechanism that regulated intake airflow with remarkable efficiency. These petals are designed to replace worn or damaged reeds, restoring the engine s breathing capacity and preventing power loss, rough idling, or excessive vacuum leaks that can plague aging airboxes. The **reed petals** feature a **tapered, flexible design** that allows them to open smoothly under positive pressure while sealing tightly under negative pressure, ensuring consistent throttle response and fuel efficiency. Whether you're restoring a classic Honda for track use or simply maintaining its reliability for daily riding, these **Moto Tassinari reeds** provide a direct, high-performance upgrade that adheres to OEM specifications while offering enhanced durability. Built to withstand the demands of high-RPM operation and prolonged use, they are an ideal choice for enthusiasts seeking a balance of authenticity and performance in their vintage machinery.

### Pros and Cons of Buying Moto Tassinari MN/W7P3 Reed Petals for a Delta Valve (1985-1986 Honda)

1. **Compatibility and Fit:** Moto Tassinari reed petals are specifically designed for Delta valve engines, which were used in 1985-1986 Honda CBR400F, CBR500F, and other models. The MN/W7P3 model is tailored for the Delta valve configuration, ensuring a proper fit without modifications.

2. **Performance Enhancement:** Reed petals help improve airflow into the engine by allowing the intake to open earlier and close later than stock reed valves. This can lead to better throttle response, increased horsepower, and smoother power delivery, especially under acceleration.

3. **Durability:** Moto Tassinari components are known for their high-quality materials and craftsmanship. The reed petals are made to withstand the stresses of high-performance riding, reducing the risk of premature failure compared to aftermarket knockoffs.

4. **Ease of Installation:** These reed petals are designed to replace the stock reeds with minimal effort. Most riders report that installation takes less than an hour, especially if they have basic mechanical skills. The kit typically includes gaskets, seals, and sometimes a new reed plate for a complete upgrade.

5. **Compatibility with Other Modifications:** If you ve already modified your Delta valve engine (e.g., porting, camshafts, or exhaust), these reed petals can complement those changes by optimizing airflow further.

6. **Reputation and Reliability:** Moto Tassinari is a well-respected brand in the motorcycle performance community, particularly for Delta valve upgrades. Many riders trust their products for reliability and performance gains.

7. **Cost-Effective Upgrade:** Compared to more extensive engine modifications (e.g., full porting or a new cylinder head), reed petals offer a relatively inexpensive way to noticeably improve throttle response and power.

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1. **Limited Power Gains:** While reed petals improve airflow, the gains are often modest typically in the range of 5-10 horsepower, depending on the rest of the engine setup. If you re looking for dramatic power increases, other modifications (like cams, pistons, or a full rebuild) may be more effective.

2. **Potential for Overheating:** If the rest of the engine (e.g., carburetors, exhaust, or ignition) isn t tuned to match the increased airflow, the engine may run richer or hotter than intended. This can lead to fouled spark plugs, reduced efficiency, or even overheating in extreme cases.

3. **Requires Tuning:** Simply installing reed petals without adjusting the carburetors (e.g., jetting or ECU tuning, if applicable) can result in a lean or rich mixture. This may cause rough idling, hesitation, or reduced fuel efficiency. Some riders may need to consult a mechanic or tuner to optimize the setup.

4. **Noise and Vibration:** Reed petals can make the engine slightly louder and may introduce a subtle change in exhaust note due to improved scavenging. While not overly intrusive, this could be noticeable to sensitive riders.

5. **Risk of Installation Errors:** If not installed correctly, reed petals can cause air leaks, leading to poor performance or even damage to the engine. Improper sealing or misalignment can also result in the reeds not functioning as intended.

6. **Not a Standalone Solution:** Reed petals work best when paired with other performance upgrades (e.g., cams, headers, or a high-flow air filter). On their own, they may not provide significant benefits over stock reeds, especially on lightly modified engines.

7. **Cost of Additional Parts:** While the reed petals themselves are reasonably priced, you may need to purchase additional components like gaskets, seals, or even a new reed plate to ensure a proper fit. Some riders also opt for a new reed plate to prevent warping over time.

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Moto Tassinari MN/W7P3 reed petals are a solid choice for riders looking to enhance the performance of their 1985-1986 Honda Delta valve engine. They offer a straightforward, cost-effective way to improve throttle response and airflow without major engine work. The quality and compatibility of Moto Tassinari s products make them a reliable option, especially for those who have already invested in other performance modifications.

However, the benefits are not revolutionary expect modest gains in power and responsiveness rather than a dramatic overhaul. The upgrade requires attention to tuning (carburetors or ECU) to avoid issues like overheating or poor fuel economy. If you re already running a modified engine (e.g., with cams or headers), these reed petals can be a worthwhile addition. For stock or lightly modified engines, the gains may be less noticeable.

- You ve already modified your engine (e.g., with cams, headers, or a high-flow air filter) and want to further optimize airflow.

- You re willing to tune your carburetors or consult a professional to ensure proper jetting.

- You prioritize ease of installation and a reputable brand over extreme power gains.

- Your engine is stock or minimally modified, as the gains may not justify the cost.

- You re not comfortable with basic tuning or adjusting carburetors.

- You re looking for a major power increase, as other modifications (e.g., pistons, cams, or a full rebuild) would be more effective.

For most riders, the Moto Tassinari reed petals are a worthwhile upgrade especially when paired with complementary modifications but they should be part of a broader performance strategy rather than a standalone solution. Always follow installation instructions carefully and monitor engine behavior after installation to ensure optimal performance.

Details:

Moto Tassinari Reed Petals for Delta V Valve 1985 - 1986 Honda eu: Status: In Stock.

part #: mnw7p3 price

• $87.33

specifications intakefuelmotorcycle:

• for makes: Honda
• for years: 1985-1986
• brand: Moto Tassinari
• mpn: Mn/w7p3
• compatible year: 1986 1985
• compatible model: Atc250es Big Red
• bundle description: 1 Pc Genuine Moto Tassinari Reed Petals For Delta V Reed Valve
• type: Reed Petals For Delta V Reed Valve
• core charge: Free No Core Charge
• fitment type: Direct Replacement

payments intakefuelMotorcycle:

• credit card: Diners-club
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• other

offer intakefuelMotorcycle:

• options: Ship-to-home
• availability: In Stock
• started: May 11, 2026
• sold: 0
• quantity: 1

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• type: Fixed
• transit: 3-8 Days
• service: Standard
• class: Standard
• cost: $0.00

general intakefuelMotorcycle:

• condition: New
• Motorcycle Scooter Parts Accessories > Air Intake Fuel Delivery > Other Air Intake Fuel Delivery

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• # reviews: 22534
• rating: 99.2%
• city: Multiple warehouses

returns intakefuelMotorcycle:

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