CNC Machined Aluminum Bike Stems Built to Your Spec
Item Specification
Material ：6061-T6 aluminum (7075-T6 optional)
Process 4-axis CNC machining
Handlebar clamp ：31.8 mm
Steerer clamp ：28.6 mm (1-1/8″ threadless)
Stem length ：90 mm standard; 40-110 mm on request
Angle ±6° standard (±17° optional)
Finish Black anodized;custom colors on request
Bolt hardware steel; titanium optional
Weight ≈138 g at 90 mm (6061-T6)
Clamp-bore tolerance ±0.02 mm
MOQ 50 pcs per model with laser-etched logo
Description
Custom CNC Machined 6061-T6 Aluminum Bike Stems
This black CNC bike stem is machined from forged 6061-T6 aluminum and finished with a durable black anodized coat to prevent rust. Specifically, every stem is cut to a high precision tolerance (±0.02 mm) to clamp handlebars safely without slipping.
We offer standard sizes as well as full OEM custom manufacturing for bicycle brands, frame builders, and wholesale buyers at factory-direct pricing.
Why Choose Our CNC Bike Stems?
Super Strong & Rigid: Machined from solid forged 6061-T6 aluminum billet. This solid construction handles heavy riding loads without bending or making noise.
Precise Clamping (±0.02 mm): The perfectly round clamp bore touches the full surface of your handlebar. It holds tight at standard torque settings, so you never have to over-tighten screws to stop handlebar slippage.
Durable Black Anodized Finish: The smooth 20 µm anodic layer resists daily scratches and rust. Color stays uniform across every batch, saving your team inspection time.
Reliable Bolt Hardware: Comes standard with tough stainless steel bolts. Lightweight titanium bolts are also available upon request.
