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SHIMANO BL-TT78 Mechanical Brake Levers Trial Triathlon

Bl-tt78 Shimano Mechanical Brake Levers Time Trial Triathlon Tt

( Brand: Shimano ), ( Manufacturer Part Number: BL-TT78 ), ( Part Type: Lever ), ( Color: Black ), ( Material: Aluminum ), ( Country Of Origin: Japan )

Review SHIMANO Mechanical Brake Levers Time Trial Triathlon

The **Shimano BL-TT78 Mechanical Brake Levers** are a high-performance, ergonomically designed component tailored specifically for triathletes and time trial enthusiasts who demand precision, efficiency, and reliability in both the transition from bike to run and during high-speed riding. Engineered with Shimano s signature attention to detail, these levers combine a sleek, aerodynamic profile with a robust mechanical braking system, ensuring consistent modulation and stopping power even under demanding conditions. The **TT78** model features a **compact, low-profile design**, minimizing aerodynamic drag while maintaining a comfortable grip for extended periods of long-distance racing or training. The **integrated brake hoods** are contoured to cradle the rider s hands naturally, reducing fatigue and improving control during high-speed efforts, particularly in time trial or triathlon scenarios where every second and every ounce of energy counts.

What sets these levers apart is their **adjustable brake cable tension**, allowing riders to fine-tune the braking feel to their preference, whether they prefer a firmer, more responsive pull or a softer, progressive modulation for better control in wet or slippery conditions. The **mechanical operation** eliminates the need for hydraulic fluid, making maintenance simpler and more accessible, while still delivering the stopping power expected from Shimano s premium braking systems. The **durable aluminum construction** ensures longevity, even under the stresses of frequent transitions and aggressive riding, while the **integrated brake pads** (compatible with Shimano s high-performance brake pads) provide reliable stopping power across various weather and terrain conditions.

For triathletes, the **BL-TT78** levers are a game-changer, offering a seamless integration between cycling and running segments. The **low-profile hoods** allow for a more streamlined position on the bike, reducing wind resistance, while the **ergonomic shape** ensures comfort during long rides. The **quick-release mechanism** on the brake cable housing makes adjustments and maintenance a breeze, a crucial feature for athletes who prioritize efficiency in both training and race setups. Whether navigating a fast-paced triathlon course, tackling a hilly time trial, or pushing through a grueling training session, these levers deliver the precision, reliability, and performance that Shimano is renowned for, making them an essential upgrade for serious triathletes and endurance cyclists alike.

The **Shimano BL-TT78 Mechanical Brake Levers** are designed for triathlon and time trial bikes, offering a lightweight and aerodynamic solution for road cycling. Below is a detailed breakdown of their pros and cons, followed by a conclusion and recommendation.

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**Pros:**

1. **Lightweight Design:** The BL-TT78 levers are among the lightest in Shimano s mechanical brake lever lineup, weighing just 100 grams per pair. This reduces overall frame weight, which is beneficial for triathletes and time trialists focused on speed and efficiency.

2. **Aerodynamic Shape:** The levers feature a streamlined, aerodynamic profile that minimizes drag. This is particularly advantageous for triathlon and time trial disciplines where reducing air resistance is critical.

3. **Compatibility with Triathlon and Time Trial Frames:** These levers are specifically designed for drop-bar road bikes, including triathlon and time trial models. They integrate seamlessly with the aggressive handlebar angles and aerodynamic positions common in these disciplines.

4. **Mechanical Reliability:** As mechanical brakes, they offer a simpler and more robust system compared to hydraulic brakes, with fewer components that can fail. This can be advantageous in long-distance events where reliability is key.

5. **Cost-Effective:** Mechanical brakes are generally less expensive than hydraulic systems, making the BL-TT78 a budget-friendly option for those who prioritize performance over advanced braking technology.

6. **Easy Maintenance:** Mechanical brakes are straightforward to maintain, requiring only occasional cable adjustments and cleaning. This can be a plus for riders who prefer low-maintenance components.

7. **Compatibility with Shimano Groupsets:** The BL-TT78 levers are designed to work seamlessly with Shimano s mechanical groupsets, such as the Deore, SLX, or Tourney series. This ensures a cohesive and well-coordinated system.

8. **Adjustable Brake Lever Reach:** The levers offer an adjustable reach, allowing riders to fine-tune the position for comfort and efficiency, which is particularly useful for triathletes who spend long hours in the aerodynamic position.

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**Cons:**

1. **Less Powerful Braking:** Mechanical brakes generally provide less stopping power compared to hydraulic brakes. This can be a drawback in wet or heavy braking conditions, where hydraulic systems offer better modulation and consistency.

2. **Cable Maintenance:** Mechanical brakes rely on cables, which can stretch, corrode, or become dirty over time. This requires regular cleaning and lubrication to maintain optimal performance, adding to the maintenance burden.

3. **Limited Modulation:** The braking feel can be less refined compared to hydraulic brakes, which offer smoother and more precise modulation. This might affect the rider s ability to fine-tune braking force, especially in technical or fast-paced conditions.

4. **Weight of Cables and Housing:** While the levers themselves are lightweight, the additional weight of the cables and housing can slightly offset the benefits of the levers own weight savings.

5. **Compatibility with Hydraulic Systems:** If you later decide to upgrade to hydraulic brakes, you will need to replace the levers entirely, as mechanical and hydraulic systems are not interchangeable without significant modifications.

6. **Less Common in High-End Setups:** While mechanical brakes are still used in triathlon and time trial disciplines, many high-performance riders opt for hydraulic brakes for their superior braking performance. This might limit your options if you eventually want to upgrade.

7. **Environmental Sensitivity:** Mechanical brakes can be more sensitive to weather conditions, such as rain or mud, which can affect cable performance and braking efficiency.

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**Conclusion:**

The **Shimano BL-TT78 Mechanical Brake Levers** are an excellent choice for triathletes and time trialists who prioritize lightweight, aerodynamic design and low maintenance. They offer a reliable and cost-effective braking solution that integrates well with the aggressive riding positions common in these disciplines. However, if you require superior braking power, modulation, and reliability in all conditions particularly in wet or heavy braking scenarios hydraulic brakes may be a better long-term investment.

For riders who are primarily focused on speed, efficiency, and simplicity, the BL-TT78 levers provide a compelling option that balances performance and practicality. They are particularly well-suited for those who prefer mechanical systems or are working within a budget.

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**Recommendation:**

If you are building a triathlon or time trial bike with a mechanical groupset and prioritize weight savings, aerodynamics, and low maintenance, the **Shimano BL-TT78 Mechanical Brake Levers** are a strong choice. They are ideal for riders who do not require the advanced braking performance of hydraulic systems and are comfortable with the occasional maintenance required to keep cables in optimal condition.

However, if you plan to compete in demanding races where braking performance is critical such as long-distance triathlons or races with frequent descents consider investing in **hydraulic brake levers** (e.g., Shimano Dura-Ace or Ultegra) for better stopping power and modulation. If you are unsure, test both systems on your bike to see which feels more comfortable and effective for your riding style.

Details:

Shimano BL-TT78 Mechanical Brake Levers Time Trial Triathlon TT.

part #: bltt78 prices

  • $22.51-$94.99

specifications ribicycl:

  • brand: Shimano
  • mpn: Bl-tt78
  • part type: Lever
  • color: Black
  • material: Aluminum
  • country of origin: Japan

returns ribicycl:

  • policy: No Returns

offer ribicycl:

  • options: Ship-to-home
  • quantity: 1
  • sold: 0
  • availability: In Stock
  • started: April 30, 2026

seller ribicycl:

  • # reviews: 1339
  • city: Hereford, Arizona
  • rating: 100.0%

payments ribicycl:

  • other
  • credit card: Diners-club
  • wallet: Apple-pay

general ribicycl:

  • condition: Used
  • Cycling > Bicycle Components Parts > Brake Levers

shipping ribicycl:

  • cost: $8.75
  • transit: 5-9 Days
  • type: Calculated
  • service: USPS Ground Advantage
  • class: Standard
  • carrier: USPS
part type: lever, country of origin: japan,
category: sporting goods > cycling > bicycle components parts > brake levers, color: black, material: aluminum, sku: 17746331657478751,
Shimano BL-TT78 Is Similar To:
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4 offers $22.51–$94.99 USD
  • Used. Offer #1 priced at $94.99 + $9.14 shipping estimate = $104.13* total. (picture makes it look worse than it is.). One is a little scraped up as pictured.+$9.14 shipping
  • Used. Offer #2 priced at $89.99 + $9.14 shipping estimate = $99.13* total. Lever 2 is in excellent condition without any major scuffs. Up for sale are a pair of Shimano Dura Ace BL-TT79 brake levers for triathlon/ TT bike base bars.+$9.14 shipping
  • New. Offer #3 priced at $22.51 + $5.00 shipping estimate = $27.51* total. fits Shimano Dura Ace BL-TT79 Shimano Brand Shimano MPN Y8UN98010 For Bike Type Time Trial/Triathlon UPC 689228257795 Part Type Bicycle part . Therefore, we'll ship this set without the label shown in the picture.+$5.00 shipping
  • New. Offer #4 priced at $47.13 + $29.00 shipping estimate = $76.13* total. +$29.00 shipping

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