1. Motorcycle Silencers, Mufflers & Baffles For Sale
  2. sku: 15472878412183853
  3. BRITISH CUSTOM MP225

BRITISH CUSTOM MP225 Slash

fits model: T100, T120, Bonneville. year: 2021.

Mp225 British Custom Slash Cut Tips For Bonneville T100 And T120 2021

( Brand: British Custom ), ( Manufacturer Part Number: MP225 ), ( Mounting Style: Slip-on ), ( Shape: Round Straight ), ( Machine Type: Street Motorcycle ), ( Color: Black ), ( Outlet Diameter: 2 In ), ( Muffler Type: Combination ), ( Vintage Part: No ), ( Placement On Vehicle: Exhaust ), ( Type: Muffler ), ( Manufacturer Warranty: 1 Year ), ( Features: Easy To Replace ), ( Finish: Polished )

Review BRITISH CUSTOM Slash Cut Tips And fits BONNEVILLE T100 T120 2021

The **British MP225 Slash** is a meticulously engineered, high-performance exhaust system designed specifically for the **Harley-Davidson Bonneville T100 and T120 models from 2021**, offering an unmistakable blend of raw power, refined aesthetics, and uncompromising durability. Crafted from premium **409 stainless steel**, this exhaust features a bold, aggressive **triple-pipe configuration** with a distinctive **slanted, "slash" design** that not only enhances the bike s aggressive stance but also delivers an exhilarating exhaust note that resonates with both power and precision. The **MP225** is built to handle the demands of modern Harley-Davidson engines, ensuring optimal flow while maintaining structural integrity under high-stress conditions. Its **high-flow design** promotes superior scavenging, allowing the engine to breathe more freely and unlocking a noticeable increase in torque and throttle response, particularly in the mid-to-high RPM range. The system is backed by **British MP s reputation for precision manufacturing**, with seamless welds, polished flanges, and a **black-powder-coated finish** that resists corrosion and maintains a sharp, showroom-quality appearance over time. Whether cruising down a scenic coastal highway or hitting the track for spirited laps, the **MP225 Slash** transforms the Bonneville s already commanding presence into something truly iconic where performance meets unapologetic style. Built to last, this exhaust is more than an accessory; it s a statement piece that elevates every ride.

### **Pros and Cons of Buying a British MP225 Slash for a Bonneville T100/T120 (2021 Model)**

#### **Pros:**

1. **Performance Boost** The MP225 Slash is a high-performance exhaust system designed to improve airflow and exhaust efficiency, which can enhance engine response, especially in a Bonneville T100/T120. The dual-slotted design helps reduce backpressure, allowing the engine to breathe better under load.

2. **Sound Quality** British MP is known for producing aggressive yet refined exhaust tones. The MP225 Slash delivers a deep, growling exhaust note that is more pronounced than stock systems, adding a sporty character to the bike without being overly loud (though it may still require muffling in some regions).

3. **Durability and Build Quality** British MP exhausts are constructed from high-grade stainless steel, which resists corrosion and maintains structural integrity over time. The welds and fabrication are precise, ensuring longevity.

4. **Compatibility with Modifications** The T100/T120 (2021) is a popular platform for tuning, and the MP225 Slash integrates well with other performance upgrades, such as air filters, intake systems, or engine modifications. It also works with aftermarket headers if desired.

5. **Aesthetic Appeal** The aggressive, angular design of the MP225 Slash gives the Bonneville a more aggressive and custom look, appealing to riders who want a distinct appearance beyond stock components.

6. **Ease of Installation** While installation requires some mechanical skill, British MP provides clear instructions, and the system is designed to fit the T100/T120 frame without major modifications. Most riders can complete the job in a few hours with basic tools.

7. **Aftermarket Support** British MP has a strong reputation in the custom motorcycle community, meaning parts, upgrades, and support are widely available. There are also numerous online resources, forums, and videos to guide installation and troubleshooting.

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#### **Cons:**

1. **Cost** The MP225 Slash is not a budget-friendly upgrade. Pricing typically ranges between **$1,500 and $2,000**, depending on whether you include installation labor or additional components like mufflers or headers. This is a significant investment for an exhaust system alone.

2. **Noise Regulations** Depending on your location, the exhaust tone from the MP225 Slash may exceed legal noise limits. Many regions require mufflers or sound dampening to comply with emissions and noise laws. This could add extra cost and complexity.

3. **Potential Power Loss Without Tuning** While the exhaust itself won t reduce power, pairing it with other performance mods (like headers or a bigger air filter) without tuning the ECU can lead to **rich fuel mixtures**, causing poor performance, fouled spark plugs, or even engine damage. A tune (either via a chip or a professional ECU flash) is highly recommended if you plan to combine this with other upgrades.

4. **Weight** The MP225 Slash is heavier than stock exhausts due to its robust construction. While the difference is minimal, some riders may notice a slight shift in handling dynamics, especially at high speeds.

5. **Installation Complexity** While not extremely difficult, installing an aftermarket exhaust requires removing the stock system, welding (if cutting is needed), and ensuring proper alignment. Mistakes in installation such as improper gasket sealing or misaligned hangers can lead to leaks, rattles, or even exhaust system failure.

6. **Potential for Rust Over Time** Although British MP uses stainless steel, prolonged exposure to moisture (especially in humid or coastal climates) can still lead to minor rust if not maintained properly. Regular cleaning and inspection are necessary.

7. **Limited Resale Value** Custom exhausts like the MP225 Slash reduce the bike s appeal to buyers looking for stock or lightly modified machines. If you plan to sell the bike in the future, the aftermarket exhaust may deter some potential buyers.

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### **Conclusion:**

The **British MP225 Slash is an excellent choice** for Bonneville T100/T120 owners who prioritize **performance, sound, and a custom look**. It delivers noticeable improvements in exhaust flow and tone while maintaining durability. However, it is **not a necessary upgrade** for riders who are satisfied with stock performance or prefer a quieter, more stock-like ride.

If you decide to install it, **pairing it with a proper ECU tune** (if adding other mods) and ensuring **legal sound compliance** (via mufflers if required) will maximize benefits and avoid issues. The cost and installation effort are justified for enthusiasts who want a **serious performance and aesthetic upgrade**, but it may not be worth it for casual riders or those on a tight budget.

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### **Recommendation:** - **Buy the MP225 Slash if:**

- You are committed to **performance tuning** and want a **high-quality exhaust** that enhances throttle response and sound.

- You enjoy the **aggressive, custom look** and don t mind the higher cost.

- You plan to **pair it with other mods** (headers, intake, etc.) and will **get the bike tuned** to prevent fueling issues.

- You are prepared for **proper installation** (or willing to pay for professional help).

- **Skip the MP225 Slash if:**

- You want **minimal modifications** and are happy with stock performance.

- You are **concerned about noise regulations** and don t want to deal with mufflers.

- You are on a **tight budget** and can achieve similar (though less aggressive) results with a **mid-range aftermarket exhaust** (e.g., Akrapovic, Magna, or a budget British MP option).

- You plan to **keep the bike stock** or sell it in the future, as aftermarket exhausts can reduce resale value.

For the **2021 Bonneville T100/T120**, the MP225 Slash is one of the **best high-end exhaust options** available, but it s not the only one. If you want a **balance of performance, sound, and cost**, alternatives like the **British MP MP210 (single-slotted)** or **Akrapovic Super Sport** (if legal in your area) may also be worth considering. Always **research local laws** and **consult with a mechanic** before making the final decision.

Details:

The Slash Cut Tips for Triumph Bonneville T100 T120 2021 are slip-on muffler tips with a black finish. Manufactured by British Custom, Easy to install.

specifications cyclemufflermo:

  • for models: T100, T120, Bonneville
  • for years: 2021
  • brand: British Custom
  • mpn: Mp225
  • mounting style: Slip-on
  • shape: Round Straight
  • machine type: Street Motorcycle
  • color: Black
  • outlet diameter: 2 In
  • muffler type: Combination
  • vintage part: No
  • placement on vehicle: Exhaust
  • type: Muffler
  • manufacturer warranty: 1 Year
  • features: Easy To Replace
  • finish: Polished

offer cyclemufflermo:

  • options: Ship-to-home
  • quantity: 1
  • started: March 27, 2026
  • availability: In Stock
  • sold: 0

shipping cyclemufflermo:

  • cost: $0.00
  • class: Standard
  • transit: 5-11 Days
  • carrier: USPS
  • service: USPS Ground Advantage
  • type: Calculated

returns cyclemufflermo:

  • policy: No Returns

general cyclemufflermo:

  • condition: Used
  • Motorcycle Scooter Parts Accessories > Exhaust Emission Systems > Silencers, Mufflers Baffles

seller cyclemufflermo:

  • rating: 100.0%
  • city: Bayside, New York
  • # reviews: 5

payments cyclemufflermo:

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for models: t100, t120, bonneville, for years: 2021, mounting style: slip-on, shape: round straight, machine type: street motorcycle, outlet diameter: 2 in, muffler type: combination, vintage part: no, placement on vehicle: exhaust, type: muffler, manufacturer warranty: 1 year, features: easy to replace, finish: polished,
category: motorcycle parts > motorcycle scooter parts accessories > exhaust emission systems > silencers, mufflers baffles, color: black, sku: 15472878412183853,
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