Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 14 - Jul 19
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
Wiseco Yamaha XT/TT/SR500 76-81 121 CR 3425XC Piston kitThe Wiseco team has remained at the forefront of powersports performance through every era and evolution, including the development of high performance 4 strokes. Today, Wiseco's forged 4 stroke pistons are designed for each specific engine application and built to the tightest tolerances for the ultimate combination of performance and strength. Proven at every level of riding, Wiseco 4 stroke pistons are ready to deliver the power and reliability
The Wiseco team has remained at the forefront of powersports performance through every era and evolution, including the development of high-performance 4-strokes. Today, Wiseco's forged 4-stroke pistons are designed for each specific engine application and built to the tightest tolerances for the ultimate combination of performance and strength. Proven at every level of riding, Wiseco 4-stroke pistons are ready to deliver the power and reliability you're looking for.
- Complete Package: Each piston includes a wrist pin, rings, and circlips, providing everything needed for installation
- Forged Material: Optimizes strength and service life, ensuring durability under high-stress conditions
- Performance-Enhancing Features: Varied across applications to maximize both durability and power
- Improved tensile strength of forged material optimizes strength and service life
- Designed and built for each specific 4-stroke powersports engine
- Dedicated forgings allow for optimized strength-to-weight ratio
- Includes high-quality piston rings, wrist pin(s), and circlips
- Engineered, forged, and machined in the USA in Mentor, OH
- 87.00 mm Bore, 12:1 CR
This Part Fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1978-1981 | Yamaha | SR500 | Base |
| 1976-1981 | Yamaha | TT500 | Base |
| 1976-1981 | Yamaha | XT500 | Base |
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
4.9 ★★★★★
Based on 2045 reviews
Sort
Product Reviews
★★★★★ 3
They do work but they taste terrible!
Size: 60 Count (Pack of 1), Style: Melatonin 5mg
I got these for my special needs son after his doctor recommend trying melatonin to help with some sleep disturbances. They definitely help him go to bed calmly and even stay in bed through the night but I have to bribe him to get him to take them because the taste is so bad!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 10, 2021
★★★★★ 5
Amazing
Size: 60 Count (Pack of 1), Style: Melatonin 5mg
Second time that I bought this and for sure will buy it in the future.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 26, 2025
★★★★★ 5
Excellent Product!
Added this to my evening Magnesium Glycinate about 2 or 3 weeks ago. My difficulty getting a full nights sleep gradually started to improve. I am now averaging 7 or more hours straight, up from 2.5 - 3hrs. Waking feeling refreshed and more alert, not tired and groggy now. No more mid morning slump. Just keeps getting better... it's not instant but, continues to improve. These improvements alone are well worth the cost.
Also, seems to have added an extra kick to the other reason I take Magnesium... my hip pain and lack of flexibility has also improved. Almost no pain now and flexibility has gone from zero to at least 50% now. I can bend at the hip now and look forward to being able to put on socks, tie shoe laces, scrub feet and trim toenails without assistance!
I have always been physically active until the years of unconsciously favoring my left leg after breaking my right leg in several places ...twice when I was younger began to take a toll on my flexibility. Starting gradually in my mid sixties until now at 68, the list of immobility problems had become very annoying. So, this improvement is is most exciting!
My thanks to Teraputics Pure Life for making an excellent product!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 16, 2020
★★★★★ 5
Great Product
I purchased "Magnesium L Threonate, Magtein™, Brain Supplement for Memory, Focus, Sleep and Cognitive Support". I added this to my evening regimen and my difficulty getting a full nights sleep gradually started to improve. I am waking up feeling refreshed now. No more mid morning slump. These improvements alone are well worth the cost.
This improvement is is most exciting! My thanks to Teraputics Pure Life for making an excellent product!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 17, 2025
★★★★★ 5
It Put Me On An Even Plane.
After 2 months of using this supplement my sleep has improved immensely. I wake up refreshed and recharged Jitters have subsided. And bathroom trips are on a schedule.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 10, 2026
recommand products
Women's Spandex Tie-Dye Striped Tunic Top
22.99
Continental LS822CTLPN Single-Handle 1-Hole Deck Mount Bathroom Faucet with Push Pop-Up, Polished Nickel
188.47
Caroline'S Treasures Halloween Chihuahua Tall Boy Koozie Hugger, Multicolor
20.72
Caroline'S Treasures Halloween Doberman Michelob Ultra Beverage Insulator For Slim Cans, Multicolor
20.72
Caroline'S Treasures Halloween Bernese Mountain Dog Mouse Pad, Hot Pad Or Trivet, Multicolor (Bb1795Mp)
24.46