The Meroca MTB Aluminum Alloy Guide Wheel Pulley is designed for both performance and durability, making it a suitable choice for cyclists looking to enhance their bike's efficiency. Available in two sizes, the 11T pulley features a diameter of approximately 41mm, while the 13T pulley measures around 49mm.

Constructed from high-quality aluminum alloy combined with steel Palin, these pulleys are engineered to withstand the rigors of mountain biking and road cycling alike. The use of aluminum alloy ensures that the pulleys are lightweight yet robust, contributing to improved gear shifting and overall bike performance.

The precision engineering behind these guide wheels helps reduce friction during operation, resulting in smoother transitions between gears.

The HASSNS Aluminum Jockey Wheel is designed for cyclists seeking efficient rear derailleur pulleys for their bikes. Available in 11T and 13T sizes, these jockey wheels offer a diameter of approximately 41mm and 49mm, respectively.

Made from high-strength 7075 aluminum alloy, they ensure durability and lightweight performance. The inclusion of metal bearings enhances the smoothness of operation, contributing to an improved cycling experience.

These guide wheels are compatible with a variety of bike speeds, accommodating 7 to 11-speed systems as well as the older configurations of 8, 9, and 10 speeds. Each pulley comes with a shaft specification option of either 4mm, 5mm, or 6mm to fit various derailleur setups.

Weighing in at just 6. 9g for the smaller size and slightly more at 8. 8g for the larger wheel makes them an excellent choice for riders looking to minimize weight without compromising on performance.

The Litepro Chainring Tensioner is designed specifically for Zipper folding bikes, enhancing the overall performance and reliability of your cycling experience. Crafted from durable aluminum alloy, this chain tensioner weighs approximately 58 grams per piece, making it lightweight yet robust enough to withstand the rigors of regular use.

The design accommodates oval tooth plates, ensuring that the chain remains securely in place while providing smooth shifting and reduced friction during rides. This component serves as a crucial accessory for bike enthusiasts who seek to improve their bike's efficiency.

It aids in maintaining optimal chain tension, which is essential for preventing slippage and enhancing gear engagement. The pulley mechanism allows for seamless navigation through various terrains while minimizing wear on both the chain and sprockets.

The WEST BIKING 11T/13T MTB Ceramic Bearing Pulley Wheel is designed for performance and durability, making it an excellent choice for cycling enthusiasts. Constructed from high-quality Aluminum Alloy AL7075 combined with ceramic beads, this pulley offers a lightweight yet robust solution for rear derailleur systems.

The product features two tooth options—11T and 13T—allowing users to select the best fit for their specific gear ratios. Weighing in at just 6. 5g for the 11T version and 7. 8g for the 13T version, these pulleys add minimal weight to your bike while enhancing gear shifting efficiency.

Additionally, with bushings available in sizes of 4mm, 5mm, and 6mm and a thickness of approximately 1cm, these pulleys are versatile enough to accommodate various setups in mountain biking (MTB) applications.

The smooth operation provided by the ceramic bearings contributes to improved performance during rides.

The Bicycle Steel Bearing Derailleur 11T is a high-quality replacement part for your mountain or road bike. Designed to enhance the performance of your rear derailleur, this pulley roller idler bearing jockey wheel is made with durable steel bearings that ensure smooth and reliable shifting.

With a diameter of approximately 41mm, this 11T derailleur wheel is compatible with most rear derailleurs on the market and supports 7/8/9/10-speed systems. It comes in various colors including black, red, blue, gold, and black/red to match your bike's aesthetics.

This derailleur wheel weighs only 8. 8g, making it lightweight and adding minimal weight to your bike setup. Its steel bearing construction provides excellent durability while being both waterproof and dustproof.

This means you can confidently ride in any weather conditions without worrying about damaging the component. When installing the Bicycle Steel Bearing Derailleur 11T, it is recommended to use a similar size as the original wheel or choose a slightly smaller one if an exact match isn't available.

The tension wheel can also be replaced if necessary. Overall, this jockey wheel offers superior performance thanks to its steel bearing design and rugged construction. Whether you're an avid cyclist or just enjoy weekend rides, upgrading your bike's derailleur with this reliable component will enhance your overall riding experience.

The MEROCA Bicycle Ceramic Pulley is designed for both road and mountain biking enthusiasts, offering a durable and efficient solution for rear derailleurs. Constructed from high-quality 7075 aluminum alloy, this pulley is paired with ceramic bearings to enhance performance and reduce friction.

The manufacturing process includes precision CNC machining followed by anodizing, ensuring both strength and aesthetics. Available in sleek black or vibrant red, it seamlessly fits into various bike setups.

This pulley accommodates a wide range of gearing systems, specifically engineered for 8/9/10/11-speed bicycles. It features compatibility with rear derailleurs that have screw holes measuring 4MM, 5MM, or the original 6MM diameter; versatility is further enhanced by the included conversion ring which allows easy adaptation between these sizes.

The MEROCA 12T/14T Aluminum Jockey Wheel is designed for mountain bike enthusiasts looking to enhance their drivetrain performance. Constructed from durable aluminum alloy, these jockey wheels feature sealed ceramic bearings that provide smooth and efficient operation, significantly reducing friction.

The wheels are available in two sizes—12 teeth (12T) and 14 teeth (14T)—allowing users to choose the option that best fits their specific gearing needs. These pulleys are compatible with a range of bike speeds, supporting 8, 9, 10, and 11-speed setups.

In terms of aesthetics, the MEROCA jockey wheels come in three vibrant colors: black, red, and gold. Weighing approximately 12. 8 grams for the 12T version and around 14 grams for the larger model, they offer a lightweight solution without compromising on strength or durability.

The FOVNO Rear Derailleur Pulley Set is designed to enhance the performance of your bike's shifting system. This set includes three pulley sizes—12T, 14T, and 16T—making it compatible with a wide range of gear systems from 7 to 12 speeds.

The pulleys are crafted from durable POM material, ensuring longevity and smooth operation during rides. With their innovative wide and narrow tooth design, these guide wheels improve chain retention and efficiency while reducing friction.

This product is specifically engineered for use with Shimano and SRAM components, making it suitable for both mountain bikes (MTB) and road bikes. The total capacity of the set allows for optimal performance across various terrains, providing cyclists with reliable shifting capabilities even under demanding conditions.

The MTB Ceramic Bearing Jockey Wheel is designed for performance and durability, crafted from high-strength aluminum alloy (AL7075) with a CNC finish. This guide roller idler comes in sizes ranging from 11T to 18T and features ceramic bearings that are both sturdy and lightweight, ensuring a smooth operation while maintaining excellent lubrication.

The colorful options available may vary due to production batches and monitor differences; customers concerned about color can refer to the provided video for more accurate representation. This rear derailleur guide wheel is compatible with various rear derailleurs on the market, supporting bike speeds of 7 through 11 gears.

It fits roller screw axes of 4mm, 5mm, or 6mm, making it versatile enough for most setups. With its robust construction and essential design features, this jockey wheel serves as an important accessory for enhancing your biking experience.

The Shimano/Sram Ceramic Bearing Jockey Wheel is designed to enhance the performance of road bikes, offering various features that cater to both casual and competitive cyclists. Constructed from AL 7075-T6 aluminum alloy through CNC machining, this pulley boasts a diamond tool finish that provides a premium diamond metal texture and high wear resistance.

The use of imported Japanese steel bearings ensures smooth rotation with minimal resistance, significantly reducing friction and improving overall cycling efficiency. This innovative design also enhances the shifting speed of bicycle derailleurs while minimizing noise during transitions, thereby preventing chain drops.

Available in sizes 11T, 13T, and 17T, these pulleys are compatible with bike speeds ranging from 7 to 12 gears. The screw shaft accommodates roller screw shafts measuring 4/5/6 mm. With vibrant color options including black, red, blue, and green for different sizes (SDL-11 for 11T; SDL-13 for 13T; SDL-17 for 17T), cyclists can choose a pulley that matches their aesthetic preferences while benefiting from its superior functionality.