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Description
MFACTORY K-SERIES ROAD RACE CLOSE RATIO GEAR SET MF-TRS-01K20B2. 313 1st, 1. 650 2nd, 1. 304 3rd, 1. 080 4th, 0. 958 5th & 0. 851 6th (Single Synchro) MFactory Close Ratio Gears. Diamond Cut to exacting tolerances from fully Carburized Forged Nickel Chromoly Steel and put through our own proprietary heat treatment process, you will not find stronger, more reliable product on the market. The special treatment process makes our gears several times stronger & tougher than OEM Gears and are specifically designed to
2.313 1st, 1.650 2nd, 1.304 3rd, 1.080 4th, 0.958 5th & 0.851 6th (Single Synchro)MFactory Close Ratio Gears. Diamond Cut to exacting tolerances from fully Carburized Forged Nickel-Chromoly Steel and put through our own proprietary heat treatment process, you will not find stronger, more reliable product on the market. The special treatment process makes our gears several times stronger & tougher than OEM Gears and are specifically designed to endure the demanding requirements of high-power track/drag cars. After installing MFactory gears, you will experience a phenomenal increase in acceleration despite a lower top speed.
Made from imported Japanese Steel. Forged and Cryo-Tempered for unsurpassed toughness. Advanced Shot Peening technology increases surface hardness and advanced gear geometry designed using industry leading software ensure power is put to the ground.
*Ratios: 2.313 1st, 1.650 2nd, 1.304 3rd, 1.080 4th, 0.958 5th & 0.851 6th Gears
*Fits 2002-2006 Acura Integra / RSX / CTR ITR DC5 EP3 6 speed Manual Transmissions
*Note: We highly recommend using with Pro Series Carbon Synchros # SYN117
*Suitable for: Street Cars, Road/Race (not for drag race use)
*Power Rating: ~500whp
Due to the nature of For Race Use Only products, MFactory Competition Products will provide a limited 1 year warranty for all Close Ratio Gears to be free of defects in materials and workmanship upon receipt of product and time of professional installation. It is the sole responsibility of the buyer/installer to verify the suitability for installation. Parts once used in a running transmission will not be covered under warranty. Parts returned must be determined by MFactory Competition Products to be defective before any warranty credit or replacement is issued
MFactory Competition Products's obligation under warranty shall be limited to repairing or replacing, at its option, any part proven defective. The customer must prepay transportation charges
Final determination of the suitability of the products for the use contemplated by the buyer is the sole responsibility of the buyer. MFactory Competition Products shall not be liable for any special, direct, indirect, incidental, or consequential damages, that might be claimed as a result of the failure of any part, including claims for delay, loss of profits, or labor
MFactory Competition Products shall not be liable for any damage or injury to persons or property resulting from improper installation or misuse of any part subject to this warranty
There are no other warranties expressed or implied extending beyond those set forth above
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 12 reviews
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Product Reviews
★★★★★ 4
Well made and perform well, a little constricting
Size: Medium, Color: Black Assortment (6-pairs)
These socks definitely keep most of the moisture away from my feet, even in wet conditions, which is why I bought them. I am diabetic, though, and the recommendation is to wear socks that don't constrict at any point. These have a tight band around the opening that while it is not uncomfortable on, leaves a mark when I take them off. So far it's been ok, but if you have any kind of swelling in your feet or ankles these would probably not be the best. My foot measures size 8 and I wear size 9 Brooks running shoes. The socks fit me just right but based on the size of the opening and the overall length, I wouldn't think they would fit anyone more than a size larger. Overall well made and perform well as you would expect from this brand.
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Reviewed in the United States on July 20, 2018
★★★★★ 5
long lasting!
Size: Medium, Color: Black/Assorted
literally my favorite sock i will buy forever. they just started busting through after 6 years and i wear them a lot
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 13, 2025
★★★★★ 5
Good quality
Size: Medium, Color: Black/Assorted
Comfy and sturdy
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Reviewed in the United States on January 27, 2025
★★★★★ 5
Favorite socks
Size: Medium, Color: Black/Assorted
These are my go to socks! Love these. Great towards sweat and different weather temperatures. Mostly use for working out and love them. Will be getting more!
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Reviewed in the United States on April 9, 2024
★★★★★ 5
Good, Comfortable Fit
Size: Medium, Color: (100) White / White / Black, Number of Items: 6, Size: Medium, Color: (100) White / White / Black, Number of Items: 6
I wear a women’s size 9.5 and I got a size Medium. They fit perfect, they aren’t super heavy, but have cushion where needed. Perfect for my steel toe boots
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 28, 2026
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