fits model: Xl1200s, Sportster. make: Harley, Davidson. year: 1999–2001.

( Brand: Harddrive ), ( Manufacturer Part Number: MN/C2TA ), ( Compatible Year: 2001 2000 1999 ), ( Compatible Make: Harley Davidson ), ( Compatible Model: Xl1200s Sportster 1200 Sport ), ( Bundle Description: 1 Pc Genuine Harddrive Breather Bolts ), ( Type: Breather Bolts ), ( Core Charge: Free No Core Charge ), ( Fitment Type: Direct Replacement )
The **MN/C2TA breather bolt replacement kit** is a meticulously engineered solution designed specifically for the **1999 2001 Harley-Davidson XL1200S Sportster XL**, addressing a common yet critical issue that can compromise engine longevity and performance. These **breather bolts**, also known as **oil control ring (OCR) or crankcase ventilation bolts**, play a pivotal role in maintaining proper crankcase pressure, preventing oil leaks, and ensuring smooth operation of the engine s internal components. Over time, the stock bolts often made of standard steel can wear, corrode, or deform due to the extreme heat and pressure generated within the engine bay, leading to leaks, excessive oil consumption, or even catastrophic failure of the crankshaft seals. The **MN/C2TA breather bolts** eliminate these risks by incorporating **high-strength, heat-treated alloy steel** with a **precision-machined thread design** that resists warping and maintains a perfect seal under high-temperature conditions. Each bolt is **carefully sized** to match the exact specifications of the Sportster XL s crankcase, ensuring a snug yet non-binding fit that prevents leaks while allowing for proper airflow. The **threaded design** features a **coarse pitch** that maximizes grip and minimizes the risk of stripping, while the **smooth, polished finish** reduces friction and wear on the surrounding gasket surfaces. This kit is particularly beneficial for riders who prioritize **long-term engine reliability**, as it helps mitigate the effects of aging seals, excessive oil sludge, or improper crankcase ventilation common issues that can plague older Harley-Davidson engines. Whether you're preparing for a long-distance ride, restoring a classic Sportster, or simply maintaining your bike for peak performance, these **MN/C2TA breather bolts** provide a **durable, high-performance upgrade** that goes beyond the limitations of OEM components. Installing them is a straightforward process that requires minimal tools, making it an ideal solution for both seasoned mechanics and DIY enthusiasts looking to extend the life of their engine without compromising on quality.
### Pros and Cons of Buying Hard Drive (HD) Mounting Bolts for a 1999-2001 Harley-Davidson XL1200S Sportster (XL)
#### **Pros:**1. **Improved Stability and Vibration Reduction** The **M/N C2TA breather bolts** (or similar high-quality aftermarket options) are designed to reduce engine vibration by allowing the engine to "breathe" more freely. This can lead to a smoother ride, especially at higher RPMs, by preventing excessive flex in the engine mounts.
2. **Enhanced Engine Mounting Flexibility** Stock engine mounts on the XL1200S can become stiff over time, leading to increased stress on the frame and drivetrain. Upgraded bolts with rubber or elastomeric inserts (like those from **Hard Drive**) allow the engine to move more naturally, reducing strain on the frame and suspension.
3. **Potential for Reduced Frame Fatigue** Over time, the stock engine mounts can wear out, causing excessive vibration to transfer directly to the frame. This can accelerate frame wear and even lead to cracks. Upgraded mounts help distribute forces more evenly, potentially extending the life of the frame.
4. **Easier Installation and Adjustment** Many aftermarket options, including Hard Drive s system, are designed for straightforward installation without requiring major modifications. Some systems also allow for fine-tuning of engine position for optimal alignment.
5. **Compatibility with Other Modifications** If you ve made other engine or suspension upgrades (e.g., performance exhaust, suspension tuning), upgraded engine mounts can help ensure everything works in harmony rather than causing unintended stress points.
6. **Potential for Improved Handling** By reducing harsh vibrations, the bike may handle more predictably, especially at higher speeds or under aggressive riding conditions.
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#### **Cons:**1. **Cost** A full set of upgraded engine mounts (including bolts, washers, and sometimes new mounts) can range from **$200 to $500 **, depending on the brand and whether you opt for a full kit or just the bolts. This is a significant investment for a bike that may not see heavy daily use.
2. **Installation Complexity** While many aftermarket systems are designed for DIY installation, replacing engine mounts requires lifting the bike, removing the engine from the frame (or at least disconnecting critical components), and ensuring proper alignment. If you re not comfortable with mechanical work, labor costs at a shop can add up.
3. **Potential for Over-Tuning** If the mounts are too soft or improperly installed, the engine could move excessively, leading to drivetrain issues (e.g., chain stretch, sprocket wear) or even misalignment of the transmission. This requires careful adjustment and possibly professional alignment.
4. **Mixed Reviews on Specific Brands** Some riders report that certain brands (including Hard Drive) have had inconsistent quality or durability issues. Always check reviews and consider third-party feedback before purchasing.
5. **Not a Universal Fix for All Issues** If your bike has other underlying problems (e.g., worn suspension, frame cracks, or drivetrain misalignment), upgrading the engine mounts alone won t solve them. It s part of a broader maintenance strategy.
6. **Time-Consuming Maintenance** Upgraded mounts may require periodic re-tightening or adjustment, especially if you ride aggressively or frequently. Some systems (like Hard Drive s) include adjustment tools, but others may require more frequent checks.
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### **Conclusion and Recommendation**
Upgrading to **Hard Drive (M/N C2TA breather bolts) or a similar high-quality engine mount system** can be a **worthwhile investment** for the **1999-2001 XL1200S Sportster** if you:
- Experience **excessive vibration** at higher RPMs or speeds.
- Notice **frame or drivetrain wear** that you suspect is vibration-related.
- Plan to keep the bike long-term and want to **prevent premature frame or suspension damage**.
- Are comfortable with **mechanical work** or have access to a trusted mechanic for installation.
However, if your bike is **already running smoothly** and you re not experiencing **visible signs of wear** (e.g., frame cracks, worn suspension), the benefits may not justify the cost. In that case, **regular maintenance** (checking mounts, suspension, and drivetrain alignment) may be sufficient.
#### **Final Recommendation:**- **If you ride aggressively or notice vibration issues**, consider upgrading to a **Hard Drive or similar system** (e.g., **M/N C2TA, Screamin Eagle, or Race Tech**). These brands are well-regarded for durability and performance.
- **If you re on a budget**, prioritize **checking existing mounts for wear** and **adjusting suspension** before investing in new mounts.
- **Get professional advice** if you re unsure some shops offer **mount alignment services** that can extend the life of your current setup.
- **Research thoroughly** read forums (e.g., **Harley-Davidson Forums, Cycle World**) and watch installation videos to ensure compatibility with your specific model year.
For the **XL1200S**, the **Hard Drive system** is a popular choice, but always verify that the parts are **explicitly listed for your model year** to avoid compatibility issues. If you decide to proceed, **follow installation instructions carefully** and consider having a mechanic verify the alignment afterward.
HardDrive Breather Bolts for 1999 - 2001 Harley Davidson XL1200S Sportster xl: Status: In Stock.