Over 2,000,000 Million Customers Served!!!

Need Help? Click the Live Chat to Talk to a Gearhead 💪

Enjoy Free Shipping on Orders Over $75 – Available Within the Lower 48 States!

Load image into Gallery viewer, Prestacycle-11-34-12-Speed-Cassette-CASS0668-Bicycle-Cassettes
Load image into Gallery viewer, Prestacycle UniBlock PRO Cassette - 12-Speed Shimano, For HG 12 Freehub, 11-34, Silver

SKU: CASS0668

Prestacycle UniBlock PRO 12-Speed Shimano Cassette 11-34T, Cold-Forged Chrome Molybdenum Alloy Steel, Lightweight Single-Block Design with Aluminum Cogs, Enhanced Durability, Low-Friction Shifting, for HG 12-Speed Drivetrains, Silver

Regular price $299.00
$332.95 Sale price $299.00 Regular price
Sale Sold out
Unit price
/per 
Save 10%
  • Free Shipping Over $75
  • 30 Day Returns
  • Satisfaction Guaranteed!

$10 Gift Card

at 250 points

$25 Gift Card

at 500 points

$75 Gift Card

at 1,000 points

This is a pre order item. We will ship it when it comes in stock.

$10 Gift Card

at 250 points

$25 Gift Card

at 500 points

$75 Gift Card

at 1,000 points

Description
Specifications

Upgrade Your Cycling Experience with the Prestacycle UniBlock PRO 12-Speed Shimano Cassette - 11-34 Tooth, Silver

Optimize your road or mountain bike with the premium Prestacycle UniBlock PRO Cassette, engineered for high-performance 12-speed Shimano drivetrains. Crafted from a solid block of cold-forged Chrome Molybdenum alloy steel and heat-treated for enhanced durability, this cassette offers exceptional strength and low-friction operation for long-lasting, smooth shifting across diverse terrains.

Materials & Engineering Excellence

Constructed with precision, the UniBlock PRO features a single-piece design for the steel cogs, which ensures minimal weight and simplifies maintenance. The two largest cogs are made from high-quality 7075 aluminum, providing a lightweight profile without compromising strength. The honeycomb-inspired material removal maximizes weight savings while maintaining structural integrity, making this cassette one of the most durable and efficient options available.

Advanced Components & Technology

Engineered for ARC Maximum Performance 12-speed shifting, the UniBlock PRO delivers seamless and consistent gear changes amid demanding cycling conditions. The profiled teeth and optimized shifting ramps facilitate smooth transitions, reducing drivetrain wear and enhancing overall ride quality. The featured electroplated finish further reduces friction, ensuring your resistance remains low for crisp, responsive shifts.

Innovative & Differentiating Features

- Single-Block Design: Facilitates easier cleaning and reduces unnecessary weight, thanks to carefully machined material removal.

- Compatibility & Adaptability: Compatible with Shimano HG 12-speed freehubs, including HG11 models for road bikes. Note: Not compatible with SRAM Road AXS or Campagnolo systems. A Prestacycle HG10 lockring is required for HG10 freehubs (sold separately).

- Lightweight & Durable: Weighing only 203 grams, it offers an excellent balance of strength and weight savings for competitive cycling.

- Premium Finish & Aesthetics: Sleek silver color complements any bike setup, adding a professional, high-tech look.

- Included Accessories: Comes with a red aluminum locknut for secure installation on compatible freehubs.

Ideal Use Case & Style

Designed for serious cyclists seeking reliable, rapid gear shifts and enhanced drivetrain longevity, the UniBlock PRO cassette excels in competitive road racing, mountain biking, and long-distance endurance rides. Its modern design and high-grade materials make it a stylish and functional upgrade for performance-oriented bike enthusiasts.

Specifications

- Gear Range: 11-34T

- Cogs: 11-12-13-14-15-17-19-21-24-27-30-34

- Compatibility: Shimano HG 11/12-Speed Road Freehubs

- Weight: 203 grams

- Color: Silver

Elevate your cycling performance with the Prestacycle UniBlock PRO 12-Speed Cassette - engineered for durability, designed for precision, and built to last. Perfect for those demanding maximum performance and effortless shifting on all your cycling adventures.

  • High-quality, durable alloy construction ensures long-lasting performance and reliability in all cycling conditions.
  • Engineered with precision machining from cold-forged Chrome Molybdenum steel, providing exceptional strength while minimizing weight for optimal riding efficiency.
  • Features innovative ARC maximum performance 12-speed shifting technology, delivering smooth, consistent gear transitions across varying terrain.
  • Designed specifically for Shimano 12-speed HG freehub systems with an 11-34 gear range; includes a red aluminum locknut for secure installation.
  • Sleek, lightweight single-block design with honeycomb material removal maximizes performance, simplifies cleaning, and enhances aesthetic appeal for serious cyclists.
Range11-34
Cogs11-12-13-14-15-17-19-21-24-27-30-34
Cassette Body TypeShimano HG 11/12-Speed Road
Drivetrain Speeds12
ColorSilver
Weight203
Defined ColorSilver
Shipping
Returns
About Us
Contact Us

We pride ourselves on our ability to ship and deliver your gear with excessive speed! We ship from 22 locations throughout the United States and most orders will arrive in 3 days or less with Free Shipping on orders over $75!

The nitty gritty, for specific delivery timelines please pay attention to the delivery timelines on the product pages and the time frame estimated in the carts. If you need a part by a specific day, please contact us by chat, phone, or

Chat

Talk with a representative

Start Chat

Email

info@365cycles.com

Send Email

Phone

603-968-5797

Call Now

Most orders placed during the workweek before 1:00 PM Eastern time ship the same day, but during peak/holiday season or depending on inventory location handling time can take up to 48 hours. If you have questions regarding shipping estimates, don't hesitate to get in touch with us before placing the order. There is a direct signature requirement for all orders over $500.

We provide the you the ability to utilize multiple shipping & billing addresses, based upon what fits your current needs. However you are responsible to maintain and update any new address changes, as 365 Cycles will not be held liable for orders being shipped to an incorrect address.

  • Our Mistake: If we messed it up you can rest assured we are going to make it right. Contact us by email, phone, or chat and we will make your head spin with how quick we fix it
  • Warranty: We are an authorized retailer for everything we sell, so rest assured your product is covered under the manufacturer's warranty. Contact Us if you are having an issue and we will make sure you are taken care of
  • Just don't want it anymore: We have a 30-day return policy for orders within the US. We offer refunds on returned items that are brand new and in their undamaged, original packaging. Customers are responsible for the cost of return shipping. Damaged, installed, and used items as well as those without original packaging are not eligible for returns. If it's returned in this condition it may be denied and sent back to you

If you need to return your order please email us at info@365cycles.com, call us at 603-968-5797, or use the live chat on our site.

Chat

Talk with a representative

Start Chat

Email

info@365cycles.com

Send Email

Phone

603-968-5797

Call Now

*Please allow up to 3 business days for us to process your return*

365 Cycles puts the customer above everything. Our number one goal is your satisfaction. When you press the shift lever you want the gears to shift, and when you buy bicycle parts, you want the bicycle parts to arrive on time in new condition. With over 60,000 products and 22 warehouse locations throughout the country, we have the parts you need and they are coming in hot!

Living an active lifestyle is just that, a lifestyle that never goes away and our goal is to always exceed your expectations so we can take this lifelong journey together. We strive to have the parts you need, at competitive prices with unmatched shipping speeds!

If there is ever an issue with an order we will work at warp speed to fix our mistake and make sure you never go a day without a bicycle! If you are not receiving the quality of service you need from one of our exceptionally qualified bicycle experts, tell them Ben Berman told you to tell them "Customer Loyalty" and then name your terms.

Our team is waiting to help you 7 days a week and they are more qualified to help than I am but if you ever feel like you're not getting the service you need I’m personally asking you to email me at ben@365cycles.com with "CUSTOMER LOYALTY" in the title and I will personally handle your order.

Over the years we have served millions of satisfied customers and continue to serve many of them today. With your feedback, we are confident we can take this lifelong journey together and build a friendship that goes beyond parts and accessories.

“If you want to go fast, go alone, if you want to go far, go together.” -Someone Smart

Ben Berman Founder & CEO of 365 Cycles


Company Core Values: 

These were established by the members of our team and we use them every week to call out team members who have shined in one of these areas. Feel free to let us know at info@365cycles.com if someone you worked with has gone above and beyond in one of these areas. 

Customer Loyalty

Put yourself in their shoes and support those who support us.

You Control the Outcome

If it is to be, it’s up to me" You are personally responsible for controlling the outcome.

Seek Understanding

Understanding the answer is more important than the answer.

Progress Not Perfection

Pick a direction, analyze the results, and be willing to change course.

Will to Win

Customers, 365 Team, Partners, all need the will to win. Bring the Will to Win to every conversion.

Keep Moving

Move the body, move the mind, and remove any hurdles to achieving an active lifestyle.

Do the Right Thing:

Doing the right thing is more important than doing the thing right.

Stronger together:

If you want to go fast, go alone, if you want to go far, go together. Get your team involved and become stronger together.

Chat

Talk with a representative

Start Chat

Email

info@365cycles.com

Send Email

Phone

603-968-5797

Call Now

Customer Reviews

Be the first to write a review
0%
(0)
0%
(0)
0%
(0)
0%
(0)
0%
(0)