Category Archives: Sports

Box BMX Crankset Bike with Bottom Bracket Vector M30-M, M35, M30-P, Hollow/Cold Forged, JIS Square Taper Design Parts 5 Bolt 110 BCD/4 Bolt 104 BCD Chainring Components


Price: $169.99
(as of Aug 27, 2024 20:49:06 UTC – Details)



Box One M30 BMX Cranks are engineered and crafted using our Oversized Technology. we all know that there is no use pushing hard on your pedals if you can’t deliver most of that power to the rear wheel. During the creation of our cranks, we were obsessed with Power delivery AKA pedaling stiffness. To reduce lateral deflection at the bottom bracket we chose to enlarge the spindle and the crank arm’s interfaces. We robbed material from unloaded sections to reinforce these zones of high stress. Not only are you going to be more efficient with power delivery, but you’ll also feel the instant response of acceleration. Seen through another lens, less energy will be required to achieve the same elapsed time.
🔹 KEY DIFFERENCES:
The Box One M30 Crankset is just as tyrannical as its big brother the Box One M35. Since it’s designed for the smaller rider the now 30mm spindle is as extreme to a smaller rider as the 35mm is to a burly world champion. The crank arms are hollow-forged but reduced in size for their application. It is possible to add too much stiffness where the rider will not feel the benefits. Going beyond that point simply adds material which is surplus weight. We’ve removed the stabilizer rings from the and removed unneeded material from its legs. These Cranksets are engineered for the smaller-sized racers.
🔹FEATURES:
Oversized Technology
Hollow Forged Design
Large 30mm Alloy Spindle
Self-Extracting BMX Crank Bolts System
🔹 IMPORTANT NOTES:
BB86 frames require Praxis part 86-4001B or 86-4001W.
BB30/PF30 frames require Praxis part 68-4001R or 68-5401R.
T47 frames require Praxis part 47-0000.
Do not use pedal washers when installing pedals onto these cranks. M30-M cranks were designed to be used without pedal washers.

🔹 MAXIMIZE PEDALING STIFFNESS: The Box One Bike Cranksets enhances pedaling stiffness by enlarging the spindle and crank arm interfaces, minimizing lateral deflection at the bottom bracket, and reinforcing critical stress zones. Experience not only enhanced efficiency in power delivery but also the immediate response of acceleration.
🔹 SEAMLESS COMPATIBILITY: Box One Oversized M30-M Bicycles Crankset compatible with components including the Box Two Chainring (4-bolt 104 BCD), Box One Chromoly Chainring Bolts, Box One 7075 Alloy Chainring Bolts, and Box Two Oversized bottom bracket M30.
🔹 DURABLE YET LIGHTWEIGHT: Box One BMX Crankset featuring a 30mm spindle and hollow-forged crank arms, the Box One M30 strikes the perfect balance between stiffness and weight. By removing stabilizer rings from the and eliminating unnecessary material from its legs.
🔹 PRECISION CRAFTSMANSHIP: Box One Oversized M30-M Bike Crankset crafted from high-grade 7075 T-6 Aluminum with hollow-forged & CNC arms and CNC turned spindle. Finished with an anodized coating and laser-etched graphics.
🔹 BOX ONE M30-M CRANKSET USAGE: The Box One M30-M Bicycle Crankset combines durability with style.These cranks are designed to not use pedal washers. The cranks are designed to specifically for 68mm wide BMX bottom bracket shells and require no spacers. These cranks are engineered for smaller-sized racers.

Ultra-Smooth Single-Speed Chain Tensioner with Adjustable Tension and Dual Spring Chain Guides – Noiseless Performance and Easy Installation for Dirt Bikes, BMX and Folding Bikes


Price: $39.98
(as of Aug 27, 2024 20:25:10 UTC – Details)



Ultra-smooth Single-Speed Chain Tensioner with Adjustable Tension and Dual Spring Chain Guides – Noiseless Performance and Easy Installation for Dirt Bikes, BMX and Folding Bikes
Innovative Double Pulley Chain Tensioner, Silent and Smooth Operation: Enjoy noise-free and smooth rides with our double-spring chain guide, which minimizes chain slaps and vibrations for a quiet and enjoyable biking experience.
Noise-Reducing Guide Wheel: Our silent guide wheel ensures stable, noiseless rides by minimizing chain wear and providing smooth speed transitions on any terrain.
Durable Aluminum Alloy Body: Crafted from high-quality aluminum alloy, our chain tensioner is lightweight yet robust, offering exceptional stability and longevity for your mountain or folding bike.
Effortless Installation: With a straightforward three-step installation process, our tensioner fits seamlessly into frames with rear tailhooks, enhancing your bike’s performance without any hassle.
Versatile Compatibility: Perfect for both mountain bikes and folding bikes, our rear chain guide improves stability and reduces noise, ensuring a superior riding experience across various terrains.

ROCKBROS Kids Full Face Helmet Kids Bike Helmets Lightweight Toddler Mountain Bike Helmet Detachable for MTB BMX Skating Cycling Scooter Safety Bicycle Helmets for Youth Child Boys Girls Ages 3-16


Price: $72.99
(as of Aug 27, 2024 19:57:36 UTC – Details)


From the brand

11

ROCKBROSROCKBROS

ROCK means a determination to be as tough as a rock and a belief that it would persevere and innovate no matter how hard it is;

BROS means the customer is like brother and sister, and we will accompany the customer like family. ROCKBROS adheres to the concept of providing high-quality, comfortable, and affordable products for everyone who loves cycling and healthy life, spreading a healthy cycling culture.

ENJOY CYCLING ENJOY ROCKBROS!

Accessories

Mountain Bike Gears

【Safety Kids Bike Helmet】 Our child’s helmet made of Durable hard PC shell and high-density EPS foam,removable soft inner padding, multiple protection & shock absorption.Take full care of your child’s head safety.What’s more, this helmets provide professional protection for children through CE safety certification,Please be assured that it will protect your child like Superman
【Lightweight & Breathable】This bike helmet design with 12 large vents, use breathable and comfortable foam material.Effectively reduce air resistance and reduce sweating, Are you still worried that the child is too stuffy and uncomfortable to wear a helmet? This full face helmet is so breathable and comfortable that your child will love it; Moreover, the helmet’s light only 13.4 oz (0.84 lb) protects cervical spine and will not cause any burden to the head
【2 IN 1 Detachable Helmet】ROCKBROS Kids Cycling Helmet can free conversion between half helmet and full face helmet at any time, The Bicycle helmet with removable chin guard, the chin guard is easy to remove with a button. So when it is just an ordinary leisure ride, you can easily remove the chin guard
【Upgrade Adjustable System】Our safety helmets have two size S: 19.7-21.3inch(50-54cm) M: 21.3-22.8inch(54-58cm) adjustable, which suits most 3-15 years old children head circumference. What’s more, there is 360 °adjustable buckle at the back, you can quickly adjust the size, the nylon belts are also easy to adjust
【Suitable for Multiple Scene】This would be a greatful and meaningful gift for your child, the kids bike helmet will make your child develop love for for sports, become more active and cheerful.Our full face helmet will play great protective function while your child are cycling, skating skateboarding, roller skating, inline skate, scooter, rollerblading, longboard and two wheel electronic board,minibike riding and more sports

Ridenow 2PCS Ultralight Folding Bike Inner Tube 16″/18″/BMX 20″ TPU Bicycle Tire Compatible with Valve Length French/Schrader 45/42mm


Price: $27.99
(as of Aug 27, 2024 19:31:30 UTC – Details)



Product name: Ridenow Folding Bike 16″/18″/BMX 20″ TPU Inner Tube.
Material: Special TPU
Features: Small size, light weight, good toughness, cost-effective.
Ultra light : This bicycle tube is only 45g, which is about 100 grams less than the traditional butyl rubber inner tube, a pair of which can save 200 grams, reduce the burden on the bicycle, and make the ride lighter.
Fits multiple tire sizes: This folding bike tube is compatible with many tire sizes: 16″/18″/BMX 20″ Valve Length French /Schrader 45/42 mm.
Safe and not easy to burst: The special new TPU material has excellent resistance to puncture.Seamless construction, with a mold-cured vulcanization, to ensure uniform roundness and give a smooth ride and handling.
Good airtightness : The bike inner tube is equipped with a high airtightness 42mm French /Schrader nozzle, which will not leak and can be used for half a year with one inflation.
Easy install : first remove the tire, take out the old inner tube, replace it with a new inner tube after pressing the tire back in, and then inflate it.

SIMEIQI Bike Tire 16×2.125 Inch Replacement Tire Compatible with 16″x1.75″/1.95″/2.0″/2.125″ Bike Rim for Mountain BMX Hybrid Trail Urban Bicycles


Price: $17.99
(as of Aug 27, 2024 19:04:01 UTC – Details)



Bike Tire 16″x2.125″ Inch Replacement Bike Tyre Compatible with 16″x1.75″/1.95″/2.0″/2.125″ Bike Rim for Mountain BMX Hydrid Trail Urban Bicycles
SIMEIQI Bike Tire : 16″x2.125″. Suitable for bike rim:16″x1.75″,16″x1.95″,16″x2.125″.
Special Pattern:This new special tread gives more traction and tremendous grip when climbing and turning, and improves comfort and stability a lot at the same.
Foldable tire: Folding tire allows you,even new rider to install the tire,simple and practical.Easy to carry and store for your trip.
Nylon and rubber: These tires are made of high-quality nylon and rubber. Good performance on toughness, puncture protection and wear-resistance.
Please Note: Make sure that choose the right size you need carefully before buy. Please unfold the tire and leave it alone for sometime before installation.

Mountain Bike Handlebar Stems Suspension 31.8mm Bike Stem 90mm Handlebar Stem Suspension Stem Handlebar Bike Stem for Road Bike Hybrid Bike E-Bike BMX Mountain Bike


Price: $75.99
(as of Aug 27, 2024 18:40:36 UTC – Details)


Product Description

Product Overview & How To Install

Material:Crafted from rugged aluminum alloy, it’s lightweight, this stem is built to last.
Great Compatibility: Designed to fit standard 1-1/8-inch (28.6mm) steerers and 31.8mm handlebars.Product Size:L90mm(3.54″)*H45mm(1.77″).Suitable for handlebar diameter 31.8mm(1.25″). Steerer tube diameter: 28.6mm (1-1/8″).Suspension travel: 15 – 20mm. Please check original stem size before you buy it.Double-check compatibility with your bike model.
Four Bar Linkage Suspension Design: The four bar linkage shock absorption design provides the shock absorption effect of “isolation system”,effectively absorbs the vibration and impact from the ground while ensuring that the riding posture Angle does not change, and provides a silky buffer effect for riders.
Customizable Springs: The suspension stem is equipped with 4 interchangeable springs that can be easily adapted to different terrains and personal preferences.
Help you ride further&faster:Effortlessly glides over obstacles and dampens vibrations, allowing you to ride further, faster, and with unwavering control. Elevate your ride of road bike. road bike, mountain bikes, hybrid bike, MTB, BMX, E-bike,gravel bike,etc.

Bike quill stem Aluminum Alloy Length 180mm Diameter 25.4mm, Suitable for Most Mountain Bikes, Road Bikes BMX


Price: $23.99
(as of Aug 27, 2024 17:51:53 UTC – Details)



【Size】:length 90mm, center bar length 180mm, center bar diameter 27.2mm, suitable for handlebars with a diameter of 25.4mm.
【Material】: Made of aluminum alloy, it combines lightweight and robustness.
【Appearance】:Black color overall. Thrifty solid color is easier to match your bike
【Applicable bike:】:Urban Folding Bikes, Fixed Gear Bikes, Mountain Bikes, Road Bikes, BMX
【Easy to install】:Installation diameter 25.4mm, Center bar diameter 25.4, fixed in the middle part of the straight handlebar, then tighten the fixing screws to enjoy your ride.

Tange MX320 Headsets Old School BMX 1″ Threaded 32.7mm Cup, Blue, TAS2955


Price: $59.00
(as of Aug 27, 2024 17:22:23 UTC – Details)



Fits most 80’s BMX bikes- Material: Alloy Cups- Cup Size: 32.7mm – Crown Race: 26.4mm- Steer size: 1″ (21.1mm)- Stack Height: 12 + 24.7 = 36.7mm- Bearings: Tange-Seiki 4T5-5 Sealed Bearings- Weight: 115g- Made in Japan- Color: Blue (as pic. shown)
Fits most 80’s BMX bikes
Cup Size: 32.7mm
Crown Race: 26.4mm
Steer size: 1″ (21.1mm)
Stack Height: 12 + 24.7 = 36.7mm

Bike Seat Post 27.2mm Bicycle Seatpost 350mm Angle Adjustable Seatpost for Road Bike and Mountain Bike MTB BMX,Bicycle Seat Post with Adjustable Clamp


Price: $14.99
(as of Aug 27, 2024 16:57:00 UTC – Details)


Product Description

Bicycle Seatpost Bicycle Seatpost

Bicycle Seatpost Bicycle Seatpost

Bicycle Seatpost Bicycle Seatpost

Bicycle Seatpost Bicycle Seatpost

Bicycle Seatpost Bicycle Seatpost

BICYCLE SEAT POSTS SIZE: 27.2*350 mm (1.07 *13.78inch). Please do measure the actually required diameter before purchasing.
Pay Attention to Choose Correct Diameter Size:Take out your current seatpost, the diameter marked on it’s lower area. Then buy same size from the option.
MTB seatpost with adjustable head,convenient to install.
Material: Forged aluminum alloy 6061 T6.
12-MONTH WARRANTY :Quality guarantee.If you’re not 100% satisfied with your bike seatposts, simply send us a message and we’ll take care of you.