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Ships within 48 hours · Estimated delivery Aug 27 - Sep 1
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Description
Hot Rods 4-Cycle Crankshaft Assembly - 4149 Yamaha YZ 250 2003-2013Features Factory assembled and trued to OEM specifications Drop in replacement crankshaft requires no modification unless noted CNC machined and dynamically balanced to suit the increased stroke Add +2. 00 mm to +4. 00 mm of stroke depending on application Uses stock piston unless noted Main bearings not included Can be matched with Cylinder Works Big Bore cylinders to get significant displacement and horsepower gains Not re buildable as the rods are
Features
- Factory assembled and trued to OEM specifications
- Drop in replacement crankshaft requires no modification unless noted
- CNC machined and dynamically balanced to suit the increased stroke
- Add +2.00 mm to +4.00 mm of stroke depending on application
- Uses stock piston unless noted
- Main bearings not included
- Can be matched with Cylinder Works Big Bore cylinders to get significant displacement and horsepower gains
- Not re-buildable as the rods are shorter than OEM.
Specs
| Stroke Length | 56,60 mm |
| Type | Stroker |
| Product Name | Crankshaft Assembly |
| Color/Finish | Steel |
| Material | 4140 Steel |
| Features | Standard Crankshaft |
| Riding Style | Off-Road |
| Stroke Length | 56.60 mm |
| Units | Assembly |
| Displacement | 264 cc |
| Model | 4-Cycle |
Part Notes
- Connecting rod side clearance is 0.25 mm - 0.45 mm.
- +3.00 mm stroke increase makes 264 cc.
- Uses stock piston.
- Bolt in and go.
- When using Cylinder Works big bore cylinder kit it will make 285 cc.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.8 ★★★★★
Based on 14 reviews
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Product Reviews
★★★★★ 5
My dogs love these!
Pattern Name: Ring, Size: 0.42 Ounce (Pack of 10)
I have three very large dogs who absolutely love these treats. They are very picky because they’re very spoiled! But yes, they love these!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 12, 2026
★★★★★ 5
Good value
Pattern Name: Ring, Size: 0.42 Ounce (Pack of 10)
This is a new treat for our sweet girl and she loves it! She’s a small dog so I break them in two and it’s just enough.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 23, 2026
★★★★★ 4
Overpriced but beloved
Pattern Name: Ring, Size: 0.42 Ounce (Pack of 10)
I think these are so expensive but it really helps my teething dog!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 25, 2026
★★★★★ 5
My Shih Tzu goes crazy for these!!!
Pattern Name: Ring, Size: 0.42 Ounce (Pack of 4)
My guy’s favorite treat. He sticks his nose on the bag and can barely wait for me to get it open. Doesn’t upset his digestion. Have ordered multiple times and will continue to do so.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 23, 2026
★★★★★ 5
Dog friendly
Pattern Name: Lollipop, Size: 0.53 Ounce (Pack of 4)
My chihuahua loves these chicken tender lollipops
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 24, 2026