Fast & Free Delivery

Efficient Logistics for Seamless Delivery

30-Day Return

Returns made easy

1-Year Warranty

Buy with confidence

Secure Payments

Secure Payments for Peace of Mind

You are in 

ROCKBROS 150PSI Mini Pump Fast Inflate Auto-Shutoff Digital Gauge

ROCKBROS 150PSI Mini Pump Fast Inflate Auto-Shutoff Digital Gauge

Regular price $59.99
Sale price $59.99 Regular price
Unit price
ROCKBROS Bicycle Saddle Bag Portable Waterproof With Mudguard

ROCKBROS Bicycle Saddle Bag Portable Waterproof With Mudguard

Regular price $19.99
Sale price $19.99 Regular price
Unit price
ROCKBROS Electric Bicycle Bells Loud Horn Ring Rainproof 3 Modes 90DB

ROCKBROS Electric Bicycle Bells Loud Horn Ring Rainproof 3 Modes 90DB

Regular price $15.99
Sale price $15.99 Regular price $16.99
Unit price
ROCKBROS Bluetooth Polarized Sunglasses Music Speaker Cycling Glasses Outdoor Sport

ROCKBROS Bluetooth Polarized Sunglasses Music Speaker Cycling Glasses Outdoor Sport

Regular price $62.99
Sale price $62.99 Regular price
Unit price
ROCKBROS Cooling Neck Gaiter Face Mask Fishing Scarf Face Cover for Men Women

ROCKBROS Cooling Neck Gaiter Face Mask Fishing Scarf Face Cover for Men Women

Regular price $9.99
Sale price $9.99 Regular price
Unit price
+7 See 7 more option(s)
ROCKBROS UV Protective Cooling Neck Gaiter for Outdoor Sports

ROCKBROS UV Protective Cooling Neck Gaiter for Outdoor Sports

Regular price $9.99
Sale price $9.99 Regular price
Unit price
ROCKBROS 3-in-1 Bike Bag Se Triangl,Frame, Saddle Bags

ROCKBROS 3-in-1 Bike Bag Se Triangl,Frame, Saddle Bags

Regular price $39.90
Sale price $39.90 Regular price
Unit price
ROCKBROS RGB LED Bike Wheel Light 7 Colors 15 Modes USB Rechargeable

ROCKBROS RGB LED Bike Wheel Light 7 Colors 15 Modes USB Rechargeable

Regular price $9.99
Sale price $9.99 Regular price
Unit price
ROCKBROS AS1 Mini Electric Tire Pump 100PSI 300mAh

ROCKBROS AS1 Mini Electric Tire Pump 100PSI 300mAh

Regular price $79.99
Sale price $79.99 Regular price $99.99
Unit price
ROCKBROS Polarised Full Lens Sunglasses For Cycling  Outdoor Sports UV400

ROCKBROS Polarised Full Lens Sunglasses For Cycling Outdoor Sports UV400

Regular price $26.99
Sale price $26.99 Regular price $32.99
Unit price
+5 See 5 more option(s)
ROCKBROS Half Frame Photochromic Sports Sunglasses Cycling Bike Glasses Outdoors UV400

ROCKBROS Half Frame Photochromic Sports Sunglasses Cycling Bike Glasses Outdoors UV400

Regular price $29.99
Sale price $29.99 Regular price $34.99
Unit price
ROCKBROS 2023 Newest Bike Mirrors  HD Blast-Resistant All-round Angle Adjustable Retractable (21-26mm Handlebar)

ROCKBROS 2023 Newest Bike Mirrors HD Blast-Resistant All-round Angle Adjustable Retractable (21-26mm Handlebar)

Regular price $22.99
Sale price $22.99 Regular price
Unit price
ROCKBROS Half Frame Photochromic Sports Sunglasses Cycling Bike Glasses Outdoors UV400

ROCKBROS Half Frame Photochromic Sports Sunglasses Cycling Bike Glasses Outdoors UV400

Regular price $29.99
Sale price $29.99 Regular price $34.99
Unit price
ROCKBROS Polarised Full Lens Sunglasses For Cycling  Outdoor Sports UV400

ROCKBROS Polarised Full Lens Sunglasses For Cycling Outdoor Sports UV400

Regular price $26.99
Sale price $26.99 Regular price $32.99
Unit price
+5 See 5 more option(s)
ROCKBROS Cycling Light Helmet Bike Ultralight Helmet Electric USB Helmet 3 Modes

ROCKBROS Cycling Light Helmet Bike Ultralight Helmet Electric USB Helmet 3 Modes

Regular price $75.99
Sale price $75.99 Regular price $85.99
Unit price
+1 See 1 more option(s)
ROCKBROS Kids Full Face Helmet Detachable for Youth Child Boys Girls Ages 3-16

ROCKBROS Kids Full Face Helmet Detachable for Youth Child Boys Girls Ages 3-16

Regular price $76.99
Sale price $76.99 Regular price $99.99
Unit price

ROCKBROS is an original brand founded by cycling enthusiasts

The goal of ROCKBROS is to offer high-quality products at an affordable price to every customer who loves cycling and outdoor sports.

ROCKBROS is always here for you, no matter how long you need us

When the ROCKBROS brand was established


"ROCK" symbolized our brand's determination to be as resilient as a rock, committed to persevering and innovating through any challenges.

"BROS" represents our belief that every customer is like a brother or sister, and we are here to accompany and support you like family.
As long as you need us, we are always here for you.

ENJOY CYCLING ENJOY ROCKBROS

RockBros is dedicated to providing fashionable, high-quality, comfortable, and affordable products for every cycling enthusiast who values a healthy lifestyle.

We aim to promote a culture of healthy cycling and specialize in cycling supplies.

Our goal is to ensure that every customer can "ENJOY CYCLING, ENJOY ROCKBROS."

On the Instagram

Cycling Tips

Understanding Gear Ratio: A Comprehensive Guide

Understanding Gear Ratio: A Comprehensive Guide

Gear ratio, often discussed in the context of bicycles, plays a crucial role in optimizing cycling performance. But what exactly is gear ratio, and why is it so frequently emphasized in discussions about cycling equipment? In this article, we'll delve into the intricacies of gear ratios, exploring their significance, calculation, and practical applications in cycling. What is Gear Ratio? At its core, gear ratio refers to the relationship between the number of teeth on the front chainring (crankset) and the rear cog (cassette) of a bicycle. This numerical value, obtained by multiplying the number of teeth on the front chainring by those on the rear cog, determines the gear ratio. For instance, if the front chainring has 2 teeth and the rear cog has 9, the resulting gear ratio would be 2:9, commonly referred to as an 18-speed gear system. Teeth on both the front chainring and rear cog are typically denoted by the unit 'T'. For example, 11T signifies a component with 11 teeth. It's worth noting that the largest cog on either the front or rear is considered the gear with the most teeth. Understanding Gear Ratio in Practice Gear ratio, essentially, reflects the mechanical advantage provided by different gear combinations. A larger rear cog relative to the front chainring (i.e., a lower gear ratio) facilitates easier pedaling, ideal for climbing hills or generating acceleration from a standstill. Conversely, a smaller rear cog paired with a larger front chainring (a higher gear ratio) enables higher speeds at the expense of increased pedaling effort, suitable for flat terrain or downhill riding. When pedaling, the gear ratio influences the revolutions of the rear wheel for each rotation of the pedals. This relationship directly affects the speed and effort required during cycling. Practical Considerations Choosing the appropriate gear ratio depends on various factors, including terrain, riding style, and personal preference. Cyclists often experiment with different gear combinations to find the optimal setup for their needs. For example, on flat terrain or downhill sections, cyclists may prefer a high gear ratio to maximize speed. Conversely, when facing steep inclines or challenging climbs, a lower gear ratio offers the necessary mechanical advantage to tackle the ascent with less effort. Selecting Gear Ratios for Different Riding Conditions In practical terms, adjusting gear ratios allows cyclists to adapt to changing terrain and optimize performance: Flat Terrain and Downhill Riding: Opt for higher gear ratios for increased speed and efficiency. Uphill Climbs: Lower gear ratios provide the mechanical advantage needed to conquer steep inclines with less exertion. Continuous Climbing: Gradually transitioning to lower gear ratios can help maintain a steady cadence and conserve energy during sustained climbs....
Read more
Unlocking Speed: Tips for Enhancing Your Cycling Performance

Unlocking Speed: Tips for Enhancing Your Cycling Performance

Have you ever wondered how fast you can ride a road bike? Online experts often...
Read more
Exploring the Diverse World of Bicycles: A Guide to Different Types of Bikes

Exploring the Diverse World of Bicycles: A Guide to Different Types of Bikes

Bicycles come in various shapes, sizes, and specialized designs, each tailored to different riding styles...
Read more
Can Cycling Really Help You Lose Weight?

Can Cycling Really Help You Lose Weight?

The age-old question persists: can cycling truly help you lose weight? The answer depends on...
Read more