HONDA 90304-438-000 Exhaust Pipe Nuts Caps Set

( Manufacturer Part Number: 90304-438-000 ), ( Part Type: Pipe Exhaust Cap ), ( Placement On Vehicle: Exhaust ), ( Vintage Part: No ), ( Country Of Origin: Japan )

Review HONDA Oem Factory Exhaust Pipe Nuts Caps Set fits CRF80 XR80 CRF100 XR100 1986–2013

The **Honda 90304-438-000 Exhaust Pipe Nuts and Caps Set** is a meticulously engineered replacement part designed to ensure a secure, leak-free, and reliable fit for a wide range of Honda off-road motorcycles, including the iconic **CRF80/XR80, CRF100/XR100** models produced between **1986 and 2013**. This high-quality set is crafted to maintain the original functionality and aesthetic of your bike s exhaust system while addressing common wear-and-tear issues that can compromise performance and safety. The **exhaust pipe nuts** in this set are precision-machined from durable, corrosion-resistant materials, ensuring a tight, vibration-resistant grip that prevents loosening over time even under the demanding conditions of off-road riding. Complementing the nuts are **exhaust caps**, which are designed to seal the ends of the exhaust pipes with a snug, airtight fit, reducing the risk of debris entry and maintaining optimal exhaust flow. Whether you re restoring a classic bike, upgrading an older model, or simply replacing worn-out components, this set provides the perfect balance of strength, compatibility, and ease of installation. Built to Honda s exacting standards, these parts are a straightforward solution for riders who demand both reliability and authenticity in their maintenance routine.

### **Pros and Cons of buying a Honda 90304-438-000 (1986 2013 CRF80/XR80/CRF100/XR100 Exhaust Pipe Nuts and Caps Set)**

1. **Direct Fitment** This part is designed specifically for Honda CRF80/XR80 and CRF100/XR100 models from 1986 to 2013, ensuring compatibility without modifications.

2. **Prevents Leaks and Rust** The nuts and caps help secure the exhaust system, reducing the risk of exhaust gas leaks and preventing rust buildup from moisture.

3. **Easy Installation** Typically requires minimal tools (usually just a wrench) and can be done in under an hour, even for a beginner.

4. **Cost-Effective** Compared to full exhaust replacements, this small set is inexpensive and extends the life of your existing exhaust components.

5. **Prevents Damage to Exhaust** Loose or missing nuts can cause exhaust pipes to vibrate excessively, leading to cracks or detachment this set helps maintain structural integrity.

6. **OEM Quality** Honda parts are generally durable and designed to meet the same standards as original equipment, reducing the risk of premature failure.

7. **Prevents Noise Issues** A properly secured exhaust system reduces rattling or hissing sounds caused by loose components.

1. **Potential Rust or Wear** If the original nuts or caps were corroded or stripped, they may not thread properly, requiring additional cleaning or replacement.

2. **Limited Use Beyond Exhaust** This set is only for nuts and caps; if your exhaust system has other issues (e.g., cracked pipes, damaged clamps), this won t fix them.

3. **Mismatched Threads Possible** If the exhaust system has been modified (e.g., aftermarket pipes installed), the threads might not align perfectly, requiring additional adapters.

4. **No Warranty on Used Parts** If purchasing from a third-party seller, there may be no return policy or warranty, unlike buying directly from Honda or an authorized dealer.

5. **May Not Fit Aftermarket Exhausts** Some aftermarket exhaust systems use different nut sizes or thread patterns, making this set incompatible.

6. **Minimal Performance Gain** Unlike performance exhausts, this part does not improve horsepower or airflow it s purely a maintenance and security upgrade.

7. **Possible Counterfeit Parts** Buying from untrusted sellers risks receiving fake or low-quality replicas that may not fit correctly or last long.

---

This **Honda 90304-438-000 exhaust pipe nuts and caps set** is a **practical and affordable** solution for maintaining your **1986 2013 CRF80/XR80/CRF100/XR100** exhaust system. It prevents leaks, rust, and potential damage from loose components, making it a **recommended purchase for routine maintenance**. However, if your exhaust system has **structural issues** (e.g., cracks, bent pipes), this set alone won t resolve them you may need additional repairs.

For **best results**, purchase from a **reputable seller** (Honda dealership, eBay with positive feedback, or trusted online retailers) to ensure authenticity. If you re unsure about fitment, verify compatibility with your exact model year before buying.

- You notice **loose or missing exhaust nuts/caps** and want to prevent leaks or rattling.

- You re performing **routine maintenance** on your bike.

- You want a **quick, inexpensive fix** before considering a full exhaust replacement.

- Your exhaust system has **major damage** (cracks, holes, bent pipes).

- You re unsure about **thread compatibility** with aftermarket modifications.

- You suspect **counterfeit parts** from untrusted sellers.

For long-term reliability, **replace all corroded or stripped components** and consider **lubricating threads** (with anti-seize compound) during installation to prevent future issues.

Details:

Good exhaust hardware removed from 2005 CRF80.

part #: 90304438000 prices

• $8.00-$10.00

specifications cyclemufflermo:

• for models: Crf80, Xr80, Crf100, Xr100
• for makes: Honda
• for years: 1986-2013
• mpn: 90304-438-000
• part type: Pipe Exhaust Cap
• placement on vehicle: Exhaust
• vintage part: No
• country of origin: Japan

seller cyclemufflermo:

• city: Denver, Colorado
• # reviews: 121
• rating: 100.0%

shipping cyclemufflermo:

• cost: $0.00
• transit: 5-11 Days
• service: Standard
• class: Standard
• type: Fixed

offer cyclemufflermo:

• started: February 13, 2026
• availability: In Stock
• quantity: 1
• options: Ship-to-home
• sold: 0

payments cyclemufflermo:

• other
• credit card: Diners-club
• wallet: Paypal

general cyclemufflermo:

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

returns cyclemufflermo:

• policy: No Returns

Honda 90304-438-000 Is Similar To:

• 00-0000-000 Honda Fmf Turbine Core Muffler Silencer Exhaust Pipe Cr (32.3% similar) Maybe loose. Comes exactly as shown in the pictures may fit other years model's honda CR250 FM turbine core 2 silencer free shipping silencers for details minor dings couple rivets have silicone on them...(August 5th, 2018)
• 000-0000-00 Pro Circuit Honda Silencer Muffler Exhaust Pipe Tail Back Fmf (29.9% similar) 1999 honda CR125 pro circuit 304 silencer free shipping used good condition pro exhaust may fit other years model's...(May 23rd, 2018)
• 0002075-2-m Aftermarket Brand New Exhaust Muffler Flex Pipe Kit For Honda (31.1% similar) In some instances the item shown offer may vary slightly from actual received. Brand new exhaust w muffler flex pipe kit for honda go karts and mopeds stainless steel material with stainless pipe, clamp x mounting bracket only fits oem stock, does not fit aftermarket modifications applications moped...(March 22nd, 2018)
• 001-2601 Mac Honda To Chrome Exhaust Full (29.6% similar) Full exhaust system chrome header pipes muffler removable baffle mac part fits the following: 1980 honda CB 750 CUSTOM1981 CUSTOM1982 CUSTOM1979 F 1980 F1981 F1982 F1979 K 1980 K1981 K1982 SC NIGHTHAWK1983 NIGHTHAWK 1980 900 1100 our new tech line number is...(March 25th, 2018)
• 005-040408v Two Brothers Honda Exhaust Titanium (24.1% similar) The result is a muffler that about extruded 6061 aluminum alloy heat treated to T-6 condition for increased strength, durability, hardness, and finish hold. More than titanium or carbon fiber mufflers. 25 stainless steel, power core packing consists of a first stage steel wool and second high-...(February 28th, 2018)
• 005-2060405v-s Two Brothers Silver Series Slip On Exhaust Honda (28% similar) Unparalleled commitment to top level design, material quality and construction techniques have propelled two brothers racing products the forefront of power sports for speed enthusiasts motor-driven workforce alike. Full exhaust systems installed on vehicles that did not originally contain a ...(March 21st, 2018)
• 005-2870406v-b Two Brothers Racing Honda Black Series Exhaust Aluminum (23.2% similar) Significant power gains can be expected from our slip-on exhaust systems. Dino tuned and track tested, like all BR exhausts, the black series are aimed at those who want absolute top level performance but smart understated aesthetics. Note: please choose from the v2 options in drop down menu if your...(June 10th, 2018)
• 005-2870407v-b Two Brothers Racing Honda Black Series Exhaust Carbon (24.7% similar) Significant power gains can be expected from our slip-on exhaust systems. The two brothers black series offers same great specs as unleash the performance from your Fr that has been held back by stock exhaust system. Dino tuned and track tested, like all BR exhausts, the black series are aimed at ...(June 10th, 2018)
• 005-2870408v Two Brothers Racing Honda Exhaust Titanium (22.8% similar) Note: please choose from the v2 options in drop down menu if your bike is equipped with optional oem saddlebags. 25 stainless steel, power core packing consists of a first stage steel wool and second high-temperature fiberglass comes with billet, anodized, aluminum-inlet end cap Teflon coated, die-...(January 9th, 2019)
• 005-3940405-t Two Brothers Racing Slip On Exhaust Muffler Tarmac Carbon Honda (31.6% similar) Satisfaction guaranteed before opening a request. You can also leave us a message. Please verify your junk bulk mail folder as our e-mail reply may end up in there...(November 7th, 2018)
• 005-4040407-s1b Two Brothers Racing Exhaust Carbon Fiber Honda (33.3% similar) Please verify your junk bulk mail folder as our e-mail reply may end up in there. Ref code: only. Shipping charges listed above apply to the contiguous us. Satisfaction guaranteed before opening a request. You can also leave us a message. See more: two brothers products juice box on the image below...(September 28th, 2018)