RINEHART 500-1248 Racing Exhaust Fxlrst Slip HP35

( Brand: Rinehart ), ( Manufacturer Part Number: 500-1248 ), ( Mounting Style: Slip-on ), ( Shape: Round Straight ), ( Machine Type: Street Motorcycle ), ( Outlet Diameter: 4 In ), ( Color: Black ), ( Vintage Part: No ), ( Placement On Vehicle: Exhaust ), ( Type: Muffler ), ( Unit Type: Unit ), ( Manufacturer Warranty: Lifetime ), ( Oe/oem Part Number: Hp35 ), ( Features: 100 Accuracy Of Fit ), ( Finish: Chrome ), ( Performance Part: Yes )

Review RINEHART Racing Slip On Exhaust Harley Davidson Fxlrst fits SOFTAIL

The **Rinehart 500-1248 Racing HP35 Slip Exhaust for Harley-Davidson Softail FXLRST** is a meticulously engineered aftermarket exhaust system designed to elevate the performance, aesthetics, and sound of the iconic Softail FXLRST to new heights. Crafted from high-quality, heavy-duty 304 stainless steel, this slip-on exhaust system is built to withstand the rigors of high-performance riding while delivering a deep, aggressive tone that turns heads on the road. The HP35 designation signifies a carefully balanced design optimized for both power and refinement, ensuring a smooth yet exhilarating exhaust note that resonates with the raw spirit of Harley-Davidson s legendary V-twin engines. Unlike generic slip-on kits, the Rinehart 500-1248 features a precision-machined slip joint that allows for seamless expansion and contraction, reducing backpressure and maximizing airflow critical for unlocking additional horsepower and torque. The system s polished, mirror-finish construction not only enhances its visual appeal but also ensures durability against corrosion, making it ideal for both track days and daily cruising. With a direct bolt-on installation that maintains the stock exhaust s structural integrity while eliminating the need for modifications to the frame or headers, this exhaust is a straightforward yet transformative upgrade. Whether you re chasing a deeper, more resonant growl or simply seeking to refine the FXLRST s already commanding presence, the Rinehart 500-1248 delivers a harmonious blend of performance and style that sets the standard for slip-on exhausts in the Harley-Davidson community.

### **Pros and Cons of buying a Rinehart 500-1248 Racing HP35 Slip Exhaust for Harley-Davidson Softail FXLRST**

#### **Pros**

1. **Performance Enhancement** The slip-on exhaust system is designed to improve exhaust flow, reducing backpressure and allowing the engine to breathe more efficiently. This can lead to better throttle response and slight power gains, particularly noticeable in mid-range RPMs.

2. **Lightweight Construction** Made from high-quality stainless steel, the Rinehart exhaust is significantly lighter than stock Harley exhausts. This reduces overall bike weight, improving handling and acceleration.

3. **Improved Sound** While not as aggressive as a full custom exhaust, the HP35 slip-on provides a deeper, more aggressive tone compared to the stock system. It retains some of the Harley growl while adding a sportier edge.

4. **Easy Installation** Slip-on exhausts are simpler to install than full-length systems, requiring fewer modifications. Most can be bolted on without welding, making it a more accessible upgrade for DIYers.

5. **Compatibility** The Rinehart 500-1248 is specifically designed for the FXLRST (and similar Softail models), ensuring a proper fit without the need for adapters or modifications.

6. **Durability** Stainless steel construction resists corrosion better than mild steel, making it a long-lasting upgrade, especially in wet or coastal climates.

7. **Aesthetic Appeal** The sleek, modern design of the Rinehart exhaust enhances the bike s appearance, giving it a more aggressive and sport-oriented look.

8. **Legal in Most Areas** Unlike some aftermarket exhausts, the HP35 slip-on typically meets emissions standards for most states, avoiding legal issues.

---

#### **Cons**

1. **Limited Power Gain** While it improves exhaust flow, the power increase is modest (often under 5-10 HP) compared to full exhaust systems or engine modifications. It s more of a refinement than a dramatic upgrade.

2. **No Major Throttle Response Boost** Some riders expect a noticeable difference in acceleration, but the improvement is subtle unless paired with other modifications (like a tune or intake upgrade).

3. **Cost Relative to Benefits** At a higher price point than basic slip-ons, the Rinehart may not justify the expense for casual riders seeking only minor improvements.

4. **Requires Tuning for Optimal Performance** To fully realize the benefits, the bike may need a tune (ECU flash or standalone ECU) to compensate for the reduced backpressure. Without tuning, gains are minimal.

5. **Not a Full Exhaust Replacement** Since it s a slip-on, it doesn t replace the entire exhaust system, meaning some stock components (like the muffler) remain. This limits the overall sound and performance upgrade compared to a full custom exhaust.

6. **Potential Fitment Issues** While designed for the FXLRST, slight variations in frame or exhaust mounting points could require minor adjustments during installation.

7. **Noise Complaints in Some Areas** Even though it s quieter than many aftermarket options, some riders or local laws may still consider it too loud, leading to potential noise complaints.

8. **Maintenance Considerations** Stainless steel is durable but can develop rust spots over time if not properly maintained, especially in harsh conditions.

---

### **Conclusion**

The **Rinehart 500-1248 Racing HP35 slip exhaust** is a solid mid-range upgrade for Harley-Davidson Softail FXLRST owners who want a balance of performance, weight reduction, and improved sound without a full exhaust swap. It s particularly well-suited for riders who:

- Want a noticeable but not extreme sound upgrade.

- Prefer a lightweight, easy-to-install solution.

- Are open to tuning for better results.

- Value durability and aesthetics.

However, it may not be the best choice for those seeking dramatic power gains or a full custom exhaust experience. If budget allows, a full custom exhaust (like the Rinehart 500-1248 full system) would provide more significant benefits, but the slip-on is a practical compromise.

### **Recommendation**

- You want a subtle but meaningful performance and sound upgrade.

- You prioritize weight reduction and ease of installation.

- You re willing to invest in a tune to maximize benefits.

- You like the aesthetic and don t need a full exhaust swap.

- You re looking for maximum power gains (consider a full exhaust or engine mods).

- You prefer a more aggressive, loud sound (opt for a full custom exhaust).

- You re on a tight budget and can achieve similar results with a lower-cost slip-on.

For most FXLRST owners, this is a **highly recommended upgrade** especially when paired with a tune offering a sweet spot between cost, performance, and style.

Details:

Rinehart Racing is proud to introduce something all new for 2018 Later Softail; The HP35 Slip-on mufflers. Delivering high performance, unique styling, and a sound that riders everywhere have fallen in love with. Pursuant to the Clean Air Act, this exhaust system will not adversely affect emissions. All new HP35 in Black with Bronze End Caps and Bodging, Race-inspired performance the same iconic Rinehart Rumble riders love, 3.5 muffler body DBX catalyst baffle delivers a serious boost horsepower torque, Look sound that's specially engineered to deliver most best sound, Easy installation.

Message with any questions. Tuning recommended, but not required, requires replacement of OEM gaskets, included, NOT available for 2018 Later Fat Bob model's Used on my 2023 FXLRST about a year. Sold the bike and now I am selling all extras.

part #: 5001248 price

• $643.77

specifications cyclemufflermo:

• for models: Softail
• for makes: Harley, Davidson
• brand: Rinehart
• mpn: 500-1248
• mounting style: Slip-on
• shape: Round Straight
• machine type: Street Motorcycle
• outlet diameter: 4 In
• color: Black
• vintage part: No
• placement on vehicle: Exhaust
• type: Muffler
• unit type: Unit
• manufacturer warranty: Lifetime
• oe/oem part number: Hp35
• features: 100 Accuracy Of Fit
• finish: Chrome
• performance part: Yes

shipping cyclemufflermo:

• transit: 5-12 Days
• type: Calculated
• service: USPS Ground Advantage
• cost: $99.54
• class: Standard
• carrier: USPS

payments cyclemufflermo:

• money order
• other
• wallet: Apple-pay
• credit card: Discover

seller cyclemufflermo:

• city: Griffin, Georgia
• rating: 100.0%
• # reviews: 1

general cyclemufflermo:

• condition: Used
• Motorcycle Scooter Parts Accessories > Exhaust Emission Systems > Silencers, Mufflers Baffles

returns cyclemufflermo:

• policy: No Returns

offer cyclemufflermo:

• quantity: 1
• sold: 0
• availability: In Stock
• started: April 8, 2026
• best offers: True
• options: Ship-to-home

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