1. Motorcycle Body-Frame Parts For Sale
  2. sku: 12829788835085633
  3. YAMAHA 3RW-11400-01-00

YAMAHA 3RW-11400-01-00 Engine Bottom End Crankcase Transmission Crankshaft

fits make: Yamaha.

3rw-11400-01-00 Yamaha Ttr230 Engine Bottom End Crankcase Transmission Crankshaft

( Manufacturer Part Number: 3RW-11400-01-00 ), ( Part Type: Engine Transmission Crankshaft ), ( Compatible Model: Ttr 230 ), ( Vintage Part: No ), ( Country Of Origin: Japan )

Review YAMAHA Engine Bottom End Crankcase Transmission Crankshaft fits TTR230

The **Yamaha 3RW-11400-01-00 TTR230 Engine Bottom End (Crankcase, Transmission, and Crankshaft Assembly)** represents a meticulously engineered core component designed for high-performance off-road and dual-sport motorcycles, particularly those built around Yamaha s legendary TTR230 platform. This precision-crafted assembly serves as the backbone of the engine, housing the critical internal mechanisms that convert fuel and air into the raw power needed for aggressive riding. The **crankcase** itself is forged from high-grade aluminum alloy, ensuring an optimal balance of strength, durability, and weight reduction essential for maintaining agility and responsiveness in demanding terrains. Its seamless construction minimizes vibration and maximizes rigidity, which is crucial for sustaining high RPMs and absorbing the stresses of off-road impacts without compromising structural integrity.

At the heart of this assembly lies the **crankshaft**, a masterpiece of engineering that features counterbalanced weights to smooth out engine harmonics, reducing fatigue and enhancing ride comfort while delivering explosive torque. The crankshaft s polished journals and precision-machined bearings ensure minimal friction, allowing the engine to operate efficiently even under extreme conditions. The **transmission housing**, integrated seamlessly into the crankcase, houses the compact yet robust gear system, designed to deliver smooth, precise shifts with minimal backlash critical for riders who demand instant throttle response and seamless gear engagement. The internal gear train, often featuring helical cut teeth, is engineered to reduce noise and wear, ensuring longevity even under heavy loads.

This bottom-end assembly is not merely a functional component but a testament to Yamaha s commitment to reliability and performance. Whether installed in a stock TTR230 or customized for high-performance applications, this unit is built to withstand the rigors of trail riding, motocross, or enduro racing. Its compatibility with Yamaha s fuel injection system and electronic ignition further underscores its role in optimizing power delivery, fuel efficiency, and emissions compliance. For enthusiasts seeking to restore, upgrade, or replace a worn-out bottom end, this **3RW-11400-01-00** assembly offers a direct, high-quality replacement that restores factory specifications with precision-machined tolerances and OEM-grade materials. Whether used in a restoration project or as a performance upgrade, it embodies the perfect fusion of durability, efficiency, and Yamaha s legendary engineering heritage.

### **Pros and Cons of buying a Yamaha 3RW-11400-01-00 (TTR230 Engine Bottom End, Crankcase, Transmission, Crankshaft)**

#### **Overview**

The **Yamaha 3RW-11400-01-00** is a **rebuild kit** for the **TTR230 engine**, covering the **bottom end (crankcase, crankshaft, transmission, and related components)**. This part is essential for restoring or upgrading an older TTR230, particularly if the original components are worn or damaged. Below is a detailed breakdown of its advantages and drawbacks.

---

### **Pros**

1. **High Quality and Reliability**

- Yamaha is known for producing durable, high-performance components, and this rebuild kit is no exception. The crankshaft, bearings, and transmission parts are engineered for longevity, reducing the risk of premature failure.

- The **crankcase** is precision-machined to ensure proper alignment and sealing, which is critical for engine performance and longevity.

2. **Cost-Effective Alternative to a Full Engine Replacement**

- Replacing just the bottom end (rather than the entire engine) is significantly cheaper than buying a new or used TTR230 engine. This makes it a practical choice for owners who want to restore their bike without a full overhaul.

- The cost of labor for installation is also lower compared to a full engine swap.

3. **Improved Performance and Durability**

- A fresh set of components (crankshaft, bearings, transmission internals) can **restore power output** and **smooth out rough operation** that may have resulted from wear.

- The **crankshaft** in this kit is likely **balanced and polished**, which can reduce vibration and improve engine efficiency.

- Upgraded **transmission components** (gears, shafts, synchronizers) can lead to **smoother shifting** and **better gear engagement**.

4. **Compatibility with Modifications**

- If you plan to modify your TTR230 (e.g., porting, cam upgrades, or performance tuning), a fresh bottom end ensures that the engine has a **solid foundation** to handle increased stress.

- Some aftermarket performance parts (e.g., stronger connecting rods, upgraded pistons) pair well with a rebuilt bottom end.

5. **Easier Maintenance and Future Repairs**

- Having a **new crankcase and transmission** reduces the likelihood of **leaks, misalignment, or premature wear** in these critical areas.

- If future issues arise, you ll have a **clean slate** for repairs rather than dealing with a failing original setup.

6. **Warranty Coverage (If Applicable)**

- Yamaha rebuild kits often come with **limited warranties** (typically 12 24 months), providing peace of mind against defects in materials or workmanship.

7. **Better Fuel Efficiency and Smoother Operation**

- A properly rebuilt bottom end ensures **proper lubrication flow**, reducing friction and improving fuel economy compared to a worn-out original setup.

---

### **Cons**

1. **High Upfront Cost**

- While cheaper than a full engine replacement, the **3RW-11400-01-00 kit is still expensive** (typically **$800 $1,500 **, depending on the source and additional parts needed).

- If the engine has **severe internal damage** (bent crank, warped cylinder, or major rod issues), additional parts (e.g., pistons, rods, rings) may be required, **increasing the total cost**.

2. **Requires Professional Installation (or Advanced DIY Skills)**

- Rebuilding a bottom end is **not a beginner-friendly task**. It involves **precision machining, torque specifications, and alignment checks**.

- **Mistakes in installation** (e.g., improper bearing clearance, misaligned crankshaft, or incorrect lubrication) can lead to **catastrophic engine failure**.

- If doing it yourself, you ll need **specialized tools** (crankshaft puller, torque wrench, alignment tools, etc.), adding to the cost.

3. **Potential for Counterfeit or Low-Quality Parts**

- The aftermarket for Yamaha rebuild kits is **not always regulated**, meaning some sellers may offer **fake or substandard parts**.

- Always **verify the authenticity** of the kit (check for Yamaha part numbers, serial compatibility, and seller reputation).

- Some cheaper alternatives may use **mismatched or poorly machined components**, leading to **premature wear or failure**.

4. **Time-Consuming Process**

- A full bottom-end rebuild can take **10 20 hours** of labor, depending on the mechanic s experience.

- If you re doing it yourself, **dismantling, cleaning, inspecting, and reassembling** the engine requires patience and attention to detail.

5. **Additional Parts May Be Needed**

- The **3RW-11400-01-00 kit covers the bottom end, but other components** (pistons, rings, valves, camshaft, timing components) may still be worn and need replacement.

- If the **cylinder bore is worn**, you may need **oversized pistons and rings**, adding to the cost.

- **Seals, gaskets, and O-rings** (timing cover, oil pump, transmission) should also be replaced as part of the rebuild.

6. **Risk of Overhauling a Failing Engine**

- If the **cylinder head, camshaft, or fuel system** is severely damaged, rebuilding just the bottom end **won t fix the root cause** of poor performance.

- Some owners end up needing a **full engine rebuild** if other components are neglected.

7. **Limited Availability of Specialized Tools**

- Some tools required for a proper rebuild (e.g., **crankshaft balancer, bore gauge, precision torque wrench**) may not be readily available to the average DIYer.

- Renting or purchasing these tools adds to the **hidden costs** of the project.

---

### **Ending Conclusion**

The **Yamaha 3RW-11400-01-00 bottom-end rebuild kit** is a **strong choice** for TTR230 owners who want to **restore performance, reliability, and longevity** without replacing the entire engine. It offers **superior quality, cost savings compared to a full engine swap, and improved drivability** making it ideal for those who want a **mid-level restoration** rather than a full rebuild.

However, it is **not a simple or cheap fix**. The **high cost, technical complexity, and potential for additional repairs** mean that this kit is **best suited for experienced mechanics or serious DIYers** willing to invest time and effort. If you re unsure about the condition of other engine components (head, cam, fuel system), a **full engine inspection** may be necessary before committing.

For **casual riders or those on a tight budget**, this kit may not be the best option unless they have access to professional help. But for **performance enthusiasts or those planning long-term use**, it is a **wise investment** in the health of their TTR230.

---

### **Final Recommendation**

- **If you have mechanical experience and access to proper tools**, consider **installing the kit yourself** to save on labor costs. However, **proceed with caution** mistakes can be costly.

- **If you lack experience**, **hire a reputable Yamaha specialist or performance shop** to perform the rebuild. Look for mechanics with **TTR230 or Yamaha 3RW engine experience**.

- **Before purchasing**, **inspect the engine thoroughly** check for **cylinder wear, camshaft condition, and fuel system health**. If other components are failing, budget for a **fuller rebuild**.

- **Buy from an authorized Yamaha dealer or trusted aftermarket supplier** to avoid counterfeit parts.

- **Consider a full engine rebuild** if the TTR230 has **high mileage or signs of severe wear** sometimes, a **new or used engine** is more cost-effective in the long run.

**Best for:** Riders who want a **reliable, high-performance bottom end** without a full engine replacement and are willing to invest time and money into a **quality restoration**.

**Not ideal for:** Those who want a **quick, cheap fix** or lack the skills/tools for proper installation.

Details:

Not a big deal, I just wanted to mention it. Crankshaft spins great and I cannot detect any play in the rod by moving up or down hand. If I happened to miss the problem initially, while rare, that is not unusual for used parts. Nothing goes through the case.

I now have to make it perfectly clear as well. Too many other parts here to list all the numbers. The part number listed is for the crankshaft.

37 lbs in a 18x13x13 or so box. I put in the box size and weight costs are determined by your zip code and/or country. Make SURE it is before you try to purchase this item. This bottom end came off a 2007 Yamaha TTR230.

You are buying these USED parts in AS IS condition. There is some chain rash around the counter shaft area of case as clearly shown in photos. Shipping is set by the carrier, not me. Plenty of photos for your viewing pleasure so Study all photos, use the zoom feature and make sure you are good to go on this PRIOR purchase.

part #: 3rw114000100 prices

  • $75.00-$250.00

specifications fendeframat:

  • for makes: Yamaha
  • mpn: 3rw-11400-01-00
  • part type: Engine Transmission Crankshaft
  • compatible model: Ttr 230
  • vintage part: No
  • country of origin: Japan

offer fendeframat:

  • started: May 12, 2026
  • availability: In Stock
  • sold: 0
  • options: Ship-to-home
  • quantity: 1

payments fendeframat:

  • other
  • credit card: Diners-club
  • wallet: Apple-pay

general fendeframat:

  • condition: Used
  • Motorcycle Scooter Parts Accessories > Body Frame > Other Body Frame

returns fendeframat:

  • paid by: Buyer
  • policy: Returns Accepted
  • time: 14 Days

seller fendeframat:

  • city: Saint David, Arizona
  • rating: 100.0%
  • # reviews: 2667

shipping fendeframat:

  • carrier: UPS, FedEx
  • cost: $91.47
  • service: UPS Ground, FedEx Ground / FedEx Home Delivery
  • type: Calculated
  • class: Standard
  • transit: 2-6 Days
for makes: yamaha, part type: engine transmission crankshaft, compatible model: ttr 230, vintage part: no, country of origin: japan,
category: motorcycle parts > motorcycle scooter parts accessories > body frame, sku: 12829788835085633,
Yamaha 3RW-11400-01-00 Is Similar To:
fendeframat logo
5 offers $75.00–$250.00 USD
  • Used. Offer #1 priced at $80.00 + $0.00 shipping estimate = $80.00* total. Please review the photos and ask questions to determine item condition. Removed from a running engine.FREE SHIPPING
  • For parts or not working. Offer #2 priced at $75.00 + $9.95 shipping estimate = $84.95* total. There is rust, please see all pics for details! Message with any questions! DB25 Selling for parts only.+$9.95 shipping
  • Used. Offer #3 priced at $250.00 + $91.47 shipping estimate = $341.47* total. Crankshaft spins great and I cannot detect any play in the rod by moving up or down by hand The part number listed is for the crankshaft.+$91.47 shipping
  • Used. Offer #4 priced at $71.99 + $0.00 shipping estimate = $71.99* total. 2015 RPM ATV. OEM Crankshaft & Counter Balance 3RW-11400-00-00.FREE SHIPPING
  • Used. Offer #5 priced at $134.95 + $0.00 shipping estimate = $134.95* total. Will fit 2005-2024. Good used OEM crankshaft off of a 2015 Yamaha TTR230.FREE SHIPPING

Copyright © fendeframat.com