PRESTON PETTY PRODUCTS BA14 Brake Arm Ahrma B50MX G31M

( Brand: Preston Petty Products ), ( Manufacturer Part Number: BA14 ), ( Part Type: Brake Arm ), ( Placement On Vehicle: Front Or Rear ), ( Country Of Origin: United States )

Review PRESTON PETTY PRODUCTS Brake Arm Ahrma Hodaka fits STEENS XR75 SL70 SL100 XL75 F21M

The **Preston Petty BA14 Brake Arm** is a meticulously engineered, high-performance component designed to elevate the braking experience across a diverse range of off-road and adventure motorcycles, including the legendary **Yamaha XR75, SL70, SL100, XL75, Honda AHRMA, Kawasaki F21M, B50MX, G31M, Suzuki Hodaka, and Steens**. Crafted with precision and built to withstand the rigors of demanding terrain, this brake arm is a testament to Preston Petty s commitment to durability, reliability, and performance optimization. The BA14 features a robust, heat-treated steel construction, ensuring it maintains structural integrity even under extreme conditions, such as prolonged high-speed descents or aggressive trail riding. Its design incorporates a **smooth, low-friction pivot system**, reducing wear on the brake caliper and pads while enhancing responsiveness, allowing riders to achieve tighter, more controlled stops with minimal effort. The arm s **ergonomic shape** is carefully contoured to minimize interference with suspension travel, ensuring seamless operation across all riding scenarios whether navigating rocky trails, technical singletrack, or high-speed highway sections. For riders who demand the utmost in braking performance and longevity, the BA14 is an indispensable upgrade, seamlessly integrating with stock or aftermarket brake systems to deliver consistent, powerful stopping power without compromising on durability. Whether tackling the rough-and-tumble of desert racing or the technical climbs of alpine trails, this brake arm stands as a reliable partner, reinforcing the bond between rider and machine while pushing the boundaries of what vintage and modern adventure bikes can achieve.

### **Pros and Cons of Buying a Used Preston Petty BA14 Brake Arm (XR75, SL70, SL100, XL75, AHRMA, F21M, B50MX, G31M, Hodaka, Steens)**

The **Preston Petty BA14** is a popular aftermarket brake arm kit designed to improve braking performance, reduce brake dive, and enhance handling on various dirt bikes, particularly those in the **70cc to 125cc range**. Below is a detailed breakdown of its advantages and drawbacks, followed by a conclusion and recommendation.

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### **Pros of the Preston Petty BA14 Brake Arm Kit**

1. **Improved Braking Performance**

- The BA14 kit replaces the stock brake arm with a more rigid, adjustable, and balanced design, reducing brake lever travel and improving modulation.

- Many riders report **faster, more consistent braking** with less "sponginess" in the brake lever.

2. **Reduced Brake Dive**

- The stock brake arms on many small dirt bikes (especially 70cc 125cc) are weak and cause excessive **front-end dive** under hard braking, leading to instability.

- The BA14 kit uses **stiffer, more direct linkage**, minimizing dive and improving front-wheel traction.

3. **Adjustable Length & Angle**

- Unlike stock arms, which are fixed, the BA14 allows **fine-tuning of brake lever position** for optimal reach and leverage.

- Some versions include **adjustable pivot points**, allowing riders to optimize braking feel based on preference and bike setup.

4. **Durability & Strength**

- Made from **high-quality steel**, the BA14 is significantly stronger than OEM brake arms, reducing the risk of bending or failure under heavy braking.

- Many riders use these on **aggressive bikes** (e.g., SL70, XR75) without worrying about arm failure.

5. **Compatibility with a Wide Range of Bikes**

- **Honda XR75, SL70, SL100, XL75**

- **Kawasaki B50MX, G31M (Bajaj CT110 equivalent)**

- **Honda Hodaka (70cc)**

- **Steens (various models)**

- **AHRMA (aftermarket 70cc 125cc bikes)**

- **F21M (similar to SL70/XR75)**

- The kit includes **adjustable spacers and mounting hardware** to accommodate slight frame differences.

6. **Easier Installation**

- Most riders report that installing the BA14 is **straightforward**, requiring only basic tools.

- Comes with **clear instructions**, and many users complete the job in **under an hour**.

7. **Positive Community Feedback**

- The BA14 has a **strong reputation** in the dirt bike community, with many riders praising its **noticeable improvement in braking feel and control**.

- Commonly recommended for **track use, enduro, and aggressive riding** where strong brakes are essential.

8. **Cost-Effective Upgrade**

- Compared to **full brake system overhauls** (e.g., replacing calipers, rotors, or master cylinders), the BA14 is a **relatively inexpensive** way to get a significant braking improvement.

- Typically costs **under $50**, making it a **high-value upgrade**.

9. **Reduces Brake Lever Fatigue**

- Stock brake levers on small bikes often require **excessive force**, leading to hand strain.

- The BA14 **shortens lever travel**, making braking **less tiring** over long sessions.

10. **Works Well with Other Brake Upgrades**

- If you ve already upgraded to **better calipers (e.g., Brembo, Magura) or rotors**, the BA14 complements these changes by improving **lever feel and response**.

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### **Cons of the Preston Petty BA14 Brake Arm Kit**

1. **Not a Complete Brake Solution**

- While the BA14 improves **brake arm mechanics**, it **does not replace worn brake pads, rotors, or master cylinders**.

- If your bike s **brake system is already degraded**, the BA14 will only provide **marginal improvements** until the rest of the system is updated.

2. **Requires Proper Installation**

- If not installed correctly, the arms **can bind or misalign**, leading to **uneven brake wear or poor lever feel**.

- Some riders report **minor misalignment issues** if spacers are not adjusted properly.

3. **Limited Adjustment Range**

- While adjustable, the BA14 s **pivot points may not fit every bike perfectly**, especially on **aftermarket frames or heavily modified bikes**.

- Some users find that **fine-tuning requires trial and error**.

4. **May Not Fit Stock Brake Hoses**

- If your bike s **brake hoses are too long or too short**, the BA14 may not align perfectly, leading to **excessive lever travel or binding**.

- Some riders need to **trim or extend hoses** for a perfect fit.

5. **Not a Substitute for a Full Brake Overhaul**

- If your bike s **brake system is old and worn**, the BA14 will **not restore full braking power** you may still need **new pads, rotors, and a master cylinder**.

- Some riders expect **miraculous improvements** and are disappointed if other components are failing.

6. **Potential for Over-Braking Issues**

- Some riders, especially those used to **stock soft brakes**, find the BA14 s **stiffer feel** too aggressive.

- **Excessive braking force** can lead to **wheel lockup** if not properly modulated.

7. **Limited Warranty (If Any)**

- Most BA14 kits come with **no warranty**, meaning if the arms **bend or break** due to poor quality, you re responsible for replacement.

- However, given its **steel construction**, this is rare if installed correctly.

8. **May Not Fit All Aftermarket Brake Setups**

- If you re running **custom brake calipers or non-standard mounting points**, the BA14 may **not align properly**.

- Some **high-performance brake kits** require **custom brake arms**, making the BA14 incompatible.

9. **Learning Curve for New Riders**

- The **stiffer, more direct braking feel** can be **overwhelming for beginners** who are used to stock brakes.

- Some new riders **over-brake**, leading to loss of control.

10. **Not a Performance Upgrade for Big Bikes**

- While it works well on **70cc 125cc bikes**, the BA14 is **not designed for larger displacement bikes** (e.g., 250cc ).

- On bigger bikes, **stock brake arms are usually stronger**, and the BA14 may not provide enough leverage.

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### **Conclusion**

The **Preston Petty BA14 brake arm kit** is a **highly effective, affordable upgrade** for riders looking to **improve braking performance, reduce brake dive, and enhance control** on small dirt bikes (70cc 125cc). It is particularly beneficial for:

- **Aggressive riders** who rely on strong brakes.

- **Track riders** who need consistent, modulated braking.

- **Enduro/off-road riders** who want better front-wheel traction.

- **Those upgrading other brake components** (pads, rotors, calipers).

However, it is **not a magic fix** it works best when paired with **functional brake pads, rotors, and a properly maintained master cylinder**. If your bike s brake system is **already failing**, the BA14 will only provide **temporary improvements** until a full overhaul is done.

For most **stock or lightly modified 70cc 125cc bikes**, the BA14 is a **worthwhile investment** that delivers **noticeable benefits** without breaking the bank. Riders who expect **dramatic performance gains** should also consider **upgrading calipers and rotors** for the best results.

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### **Final Recommendation**

You ride an **XR75, SL70, SL100, XL75, B50MX, G31M, Hodaka, Steens, or similar 70cc 125cc bike**.

You **brake hard** and want **less dive and better modulation**.

You re **upgrading other brake components** (pads, rotors) and want a **complete brake feel improvement**.

You want a **simple, cost-effective** way to enhance braking without a full rebuild.

Your bike s **brake system is completely worn out** (pads, rotors, master cylinder need replacement).

You re on a **big bike (250cc )** where stock arms are usually sufficient.

You **don t want to adjust brake setup** some fine-tuning may be required for optimal fit.

You expect **miraculous performance

Details:

NOS Preston Petty brake arm in very nice condition measures 14 long 1 tall 1/8 thick with the holes size at .280 and 5/8 apart measured from line, distance furthest is 12 7/8 closest are 9 3/8, made aluminum clear anodized for corrosion protection.

specifications cyclebrakeshoe:

• for models: Xr75, Sl70, Sl100, Xl75, F21m, Steens
• for makes: Hodaka
• brand: Preston Petty Products
• mpn: Ba14
• part type: Brake Arm
• placement on vehicle: Front Or Rear
• country of origin: United States

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• # reviews: 1157
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• city: Costa Mesa, California

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• Motorcycle Scooter Parts Accessories > Brakes Brake Parts > Brake Shoes

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• started: February 22, 2026
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