Custom Motorcycle CNC Machining Aluminum Rear Brake Arm
Place of Origin : Fujian, China
Type : DRILLING
Micro Machining or Not : Micro Machining
Model Number : CMP-A16
Brand Name : JSD
Product name : Custom Motorcycle CNC Machining Aluminum Rear Brake Arm
Material : Customers’ Requirement
Surface treatment : Painting\Powder Coating\Plating\Polishing
Process : Cnc Machining + Surface Treatment
Service : Customized OEM
Application : Motorcycle
Equipment : 3/4/5 Axis CNC Machining Center
Color : Customized Color
Size : Customer Size
Drawing Format : 2D/(PDF/CAD/DWG/DXF)3D(IGES/STEP/VDA)
Description
Precision CNC Machined Motorcycle Rear Brake Arms
Custom aluminum rear brake arms manufactured for motorcycle aftermarket brands, racing applications, and OEM performance upgrades. Supporting prototyping to mass production with precision CNC machining and durable anodized finishes.
12+ Years Aftermarket Expertise
OEM/ODM Supported
Batch Consistency Guaranteed
| Material Options | 6061-T6 / 7075 Aluminum |
| CNC Accuracy | ±0.01mm |
| Surface Finish | Anodized / Powder Coated |
| Order Volume | Prototype to Mass Production |
| File Support | STEP / STP / IGES / CAD |

Aluminum Material Options for Brake Arms
We offer multiple material grades to match your application’s performance needs, from daily street riding to extreme racing conditions.
💡 Fun Fact: 7075 aluminum has a tensile strength of up to 500MPa, almost as strong as some low-carbon steels, while still being 30% lighter! That’s why it’s the top choice for racing motorcycle parts.
| Material | Key Characteristics | Typical Application |
|---|---|---|
| 6061-T6 Aluminum | Lightweight, excellent corrosion resistance, good formability, cost-effective | Street motorcycles, daily riding, general aftermarket parts |
| 7075 Aluminum | Ultra-high strength, fatigue resistance, superior vibration damping | Racing motorcycles, high-performance builds, off-road applications |
| Stainless Steel Inserts | Wear resistance, prevents thread stripping, extends part lifespan | Pivot connection points, high-wear areas of brake arms |
CNC Machining Process
Our end-to-end process ensures every brake arm meets the strictest performance and precision standards, with full control over every step:
CAD/3D design verification & DFM review
Billet aluminum material preparation & inspection
3/5-axis CNC precision machining
Deburring & edge finishing
Surface treatment (anodizing/powder coating)
Dimensional inspection & functional testing
💡 Quick Tip: Our 5-axis machines complete all operations in one setup, eliminating re-fixturing errors and cutting lead time by 30% compared to traditional 3-axis machining!

Surface Finishing Options
We offer a range of surface treatments to enhance corrosion resistance, durability, and the look of your brake arms:
Type II Anodizing
Hard, corrosion-resistant finish available in multiple colors, perfect for most street and racing applications.
Type III Hard Anodizing
Ultra-hard wear-resistant finish, ideal for off-road and high-wear racing parts.
Powder Coating
Thick, durable finish with excellent UV resistance, great for custom color branding.
Laser Engraving
Custom logo or part number engraving, permanent and wear-resistant for your brand.

Dimensional Accuracy & Quality Control
For critical safety parts like brake arms, precision and consistency are non-negotiable. We run full inspection on every batch to ensure compliance:
| Inspection Item | Our Standard |
|---|---|
| General Tolerance | ±0.01mm |
| Surface Roughness | Ra 1.6 |
| Hole Position Accuracy | ±0.02mm |
| Thread Inspection | GO/NO-GO Gauge |
| Material Certification | Available upon request |
We use CMM (Coordinate Measuring Machine) inspection for critical dimensions, plus batch fatigue durability testing to ensure every part meets safety standards.


OEM Motorcycle Brake Arm Project
US Aftermarket Brand Custom Order
Customer Requirement
Lightweight rear brake arm for Dyna model motorcycles, 7075 aluminum with black anodized finish, 3000 pcs monthly batch.
Core Challenge
The client had issues with deformation during anodizing with their previous supplier, plus inconsistent thread precision that caused assembly issues.
Our Solution
We optimized the fixture design for anodizing, added post-anodizing thread calibration, and built CNC compensation programming to counteract material distortion.
Final Result
- Part weight reduced by 18% compared to the client’s old part
- Batch rejection rate dropped to below 1.2%
- 100% assembly fit rate, eliminating client’s rework cost
Applications
Our custom brake arms are built to serve a wide range of motorcycle aftermarket and OEM applications:
| Application | Description |
|---|---|
| Racing Motorcycles | Lightweight high-strength performance upgrades for track racing |
| Custom Bikes | Personalized aftermarket parts for custom chopper and bobber builds |
| Off-road Motorcycles | Enhanced durability parts for dirt bikes and adventure motorcycles |
| Aftermarket Modification Brands | OEM component manufacturing for motorcycle modification brands |
| Motorcycle OEMs | Mass production of standard components for motorcycle manufacturers |
Why Choose Goldcattle for Your Motorcycle Parts
With 12+ years of experience serving the motorcycle aftermarket industry, we understand exactly what your business needs:
Industry Expertise
Deep understanding of motorcycle aftermarket needs, we know the specific requirements for performance and safety parts.
Stable Supply
Consistent quality across batches, with the capacity to support long-term monthly orders up to 100,000 pcs.
Fast Prototyping
Rapid prototype service in 7-10 days, so you can test your design before committing to mass production.
English Support
Dedicated English-speaking project managers, 24-hour response time for your queries.
Frequently Asked Questions
What aluminum grades are available for motorcycle brake arms?
We offer 6061-T6 for general use and 7075 for high-performance racing applications, plus optional stainless steel inserts for high-wear pivot points.
Can you manufacture based on our CAD drawings?
Yes! We support STEP, STP, IGES, and CAD files, and we provide a free DFM review to catch any potential manufacturing issues before production.
What tolerance can your CNC machining achieve?
Our standard precision is ±0.01mm for most dimensions, and we can adjust to tighter tolerances for your specific critical requirements.
Do you support low-volume motorcycle aftermarket projects?
Absolutely! We support orders from 1-piece prototypes all the way up to 100,000+ mass production parts, perfect for small aftermarket brands.
What surface finishes are available?
We offer Type II and Type III anodizing in multiple colors, powder coating, and laser engraving for custom logos or part numbers.
How do you ensure brake arm durability and safety?
We use high-grade materials, run full CMM dimensional inspection on every batch, and perform fatigue durability testing to ensure all parts meet strict safety standards.
Ready to Start Your Custom Brake Arm Project?
Get a free DFM review and custom quote within 24 hours. Our engineering team is ready to help you optimize your motorcycle parts.
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