Best in 7 days
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Ships within 48 hours · Estimated delivery Aug 11 - Aug 16
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Description
Athena 21-23 Gas Gas MC 250F 78mm Bore 250cc Standard Bore Gasket KitThe Standard Bore cylinder kit developed by Athena guarantees the same performance as the original spare parts, extreme reliability and optimal smoothness as a result of the lightweight aluminum cylinder, the barrel with nickel silicon coating, and a piston designed to reduce further friction. The kit includes the high quality aluminum cylinder with standard bore, the complete piston with the piston pin and rings, and all the necessary gaskets.
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
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Best in 7 days
Best in 7 days
Best in 7 days
Best in 7 days
4.8 ★★★★★
Based on 791 reviews
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Product Reviews
★★★★★ 5
One wire alty
I installed this on a Chevy k10 as the charge wire from the alternator to the battery so for perfect it has been about 6 months
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 16, 2021
★★★★★ 5
Good fit.
Size: 89-96158T 1PC
Just what i asked for. It's a direct replacement on my 9.9 mercury outboard.
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Reviewed in the United States on September 11, 2025
★★★★★ 4
Good
Size: 89-96158T 2PCS
Good
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Reviewed in the United States on October 26, 2025
★★★★★ 1
Bad solenoid
Size: 89-96158T 2PCS
One of the cylinders works, and the other cylinder was a bad one. It did not work.
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Reviewed in the United States on August 12, 2025
★★★★★ 4
Metric Hardware
Size: 89-96158T 1PC
Works fine. This has metric hardware, which does not match the other two relays on my vintage mercury outboard. This is not a quicksilver part
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Reviewed in the United States on August 6, 2025
