We are trying to satisfy 100% of our customers
Our bikes are 100% safe and eco-friendly
✕
biker4-shop-icon3
julio 25, 2026

AltaLine Bicycle BMX Stem 4-Bolt 21.1mm Black

Product Specifications Quill Diameter:21.1mmThe diameter of the quill section, ensuring compatibility with various bike frames. Bar Clamp:22.2mmDesigned to fit standard handlebars, providing a secure and stable connection. Stem Length:55mmThis length allows for a compact setup, enhancing control and responsiveness. Quill Length:4-1/4 InchProvides ample height adjustment options, accommodating various rider preferences and setups. Fork Compatibility:1 InchSpecifically designed for bikes with a 1-inch fork steerer tube, ensuring a proper fit. Angle:0 DegreesA straight design that allows for a neutral riding position, ideal for BMX and freestyle riding. Color:BlackThe sleek black finish gives a modern and stylish look that complements most bike designs. Material:AlloyConstructed from lightweight yet durable alloy, offering a balance of strength and weight reduction. Style:BMXTailored for BMX applications, focusing on performance and reliability during tricks and stunts. Brand:AltaLineKnown for high-quality bicycle components that cater to BMX and other cycling disciplines.Features Durable Construction:Made from alloy material, ensuring durability while keeping the weight low for enhanced performance. Adjustable Quill Length:The quill length allows for easy adjustments to fit different riding styles and preferences. Secure Bar Clamp:The 22.2mm bar clamp provides a secure grip on handlebars, ensuring stability during rides.Application The 450 Alloy Stem 21.1mm Black is ideal for: BMX Bikes:Specifically designed for BMX riders who require a strong and reliable stem for performing tricks and stunts. Custom Builds:Great for riders looking to build or upgrade their BMX bike with a high-quality stem that offers excellent performance.Benefits Enhanced Control:The short stem length and 0-degree angle provide improved handling and responsiveness, essential for BMX riding. Lightweight Design:The alloy construction ensures that the stem does not add unnecessary weight, allowing for better performance during jumps and tricks. Versatile Fit:Compatible with various handlebars and fork sizes, making it a flexible choice for different setups.
julio 25, 2026

PROFILE BMX F-1 PUSH MULVILLE STEM LIMITED 53MM GOLD/BLACK

The Profile F1 colorway features the same design specs and quality you know from Profile, just in a fancy limited edition colorway. CNC Machined aluminum that's all drilled out in the right places to save weight. Comes in lots of cool colors. The Push stem has a total rise of 31.7mm and this puts your bars overall 23mm higher than Profile's Acoustic stem does. Weight: 9.8oz (48mm) Titanium Bolts
julio 25, 2026

PROFILE BMX F-1 PUSH MULVILLE STEM LIMITED 48MM GOLD/BLACK

The Profile F1 colorway features the same design specs and quality you know from Profile, just in a fancy limited edition colorway. CNC Machined aluminum that's all drilled out in the right places to save weight. Comes in lots of cool colors. The Push stem has a total rise of 31.7mm and this puts your bars overall 23mm higher than Profile's Acoustic stem does. Weight: 9.8oz (48mm) Titanium Bolts
julio 25, 2026

Torelli Bormio Stem – Black 31.8/17°/6000 series Alloy/11cm (110MM)

Torelli Bormio 17°/110mm Alloy Stem for when you need that added reach on your fit.The Bormio stem is available in 6º, 17° and 35° rise and may be flipped to expand fit options. The lightness of this stem rivals that of carbon for a fraction of the price. The stems are produced using state of the art tri-dimensional (3D) forging process that yields a strong and light product. The bar clamp bolts are 28 mm apart to give a firm and rigid bar/stem assembly.Available sizes:17º: 110 (158g)Materials:6000 Series Alloy31.8 bar clamp diameter1 1/8” steer tube clamp diameterStack height: 4 cmAssembly torque specsHandlebar clamp bolts: 5 nmSteering tube clamp bolts: 4 nmBormio Stem suggested retail price: $65