Pay in installments of $7.18 with
,
and
Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 2 - Jul 7
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
gear engagement Nissan Silvia 180SX 200SX 240SX CA18 SR20 KA24 RB20 FJ20 FS5W71C Close – Speedtek Auto RacingOur gearsets have been proven across various platforms, and now it's time to support everyone with the small case transmissions typically found in SR20, CA18, KA24, RB20, and RB25DE powered vehicles. This kit includes forks and gears, shafts, dog rings, and hubs. You can retain the factory 5th gear and reverse gears. We offer an option for the 5th and reverse gear, which can be paired with either a heavy duty mainshaft for optimal performance or used
Our gearsets have been proven across various platforms, and now it's time to support everyone with the small case transmissions typically found in SR20, CA18, KA24, RB20, and RB25DE powered vehicles.
This kit includes forks and gears, shafts, dog rings, and hubs. You can retain the factory 5th gear and reverse gears.
We offer an option for the 5th and reverse gear, which can be paired with either a heavy-duty mainshaft for optimal performance or used with the factory mainshaft. The upgraded mainshaft has been enlarged to create a stronger transmission, capable of handling up to 600HP when combined with the enhanced 5th gear.
Ratio's below for the ultimate strength/performance:
Speedtek Auto Racing Straight Cut Gearset.
1-2.69
2-1.69
3- 1.24
4- 1.00
5- OPTIONAL 0.79 (Shorter than stock Ratio but ideal for Racing use)
S13 SR20DET & KA24 Ratio's. (180sx JDM /240SX - USDM)
1- 3.321
2- 1.902
3- 1.308
4- 1.000
5- 0.759
Be mindful these are intended for Rapid Quick Shift's, very different to a Factory FS5W71C Synchronized Transmission.
- Optional 5th Gear & Dog Engagement Reverse.
- Optional HD Main Shaft & 4140 Billet Chromoly slip Yoke to suit.
*Please be mindful that:
The SR20 / CA18 & KA24 share the same kit as the Mainshaft length is the same.
The RB20 / RB25DE / RB30E share the same kit as the Mainshaft length is the same.
If you have another engine setup then what's listed, please choose other and provide us with some information on what engine/transmission you have so we can provide you with the right kit.
When choosing the 1-5 Kit with Upgraded Mainshaft & Slip Yoke, you must use the S14 style striking rod for 5th/reverse to make the kit work, we can provide part numbers so you can order this rod and supporting parts if required from your local Nissan Dealership.
- Optional 5th Gear & Dog Engagement Reverse.
- Optional HD Main Shaft & 4140 Billet Chromoly slip Yoke to suit.
*Please be mindful that:
The SR20 / CA18 & KA24 share the same kit as the Mainshaft length is the same.
The RB20 / RB25DE / RB30E share the same kit as the Mainshaft length is the same.
If you have another engine setup then what's listed, please choose other and provide us with some information on what engine/transmission you have so we can provide you with the right kit.
When choosing the 1-5 Kit with Upgraded Mainshaft & Slip Yoke, you must use the S14 style striking rod for 5th/reverse to make the kit work, we can provide part numbers so you can order this rod and supporting parts if required from your local Nissan Dealership.
Our 3rd & 4th gear shift fork is designed around the S14 shift rod. If you're using a different transmission, you can simply redrill the shift fork rod to position the shift rod at the center of 3rd-4th gear, ensuring proper travel and functionality.
(OEM Part# 32808-03U00)
We now offer Isotropic Superfinishing on all our Speedtek Products.
(This process will increase the time from when we could dispatch the kit, please email us if you have any questions)
Superfinishing is a metalworking process that improves surface finish and workpiece geometry. This is achieved by removing just the thin amorphous surface layer left by the last process with an abrasive stone to grind the gears and other parts ; this layer is usually about 1 μm in magnitude. Superfinishing, unlike polishing which produces a mirror finish, creates a cross-hatch pattern on the workpiece.
Advantages of superfinishing include: increasing part life, decreasing wear, closer tolerances, higher load bearing surfaces, better sealing capabilities, and elimination of a break in period.
Our solid 6-month unconditional warranty program for all our manufactured gearsets, you can be confident that your investment is well-protected.
Our extended warranty program is available, for more information : Extended Warranty Program now Available with our Performance Transmiss – Speedtek Auto Racing
We provide installation instructions for all our Dog Engagement Gearsets, please email us for this when you receive your kit.
(OEM Part# 32808-03U00)
We now offer Isotropic Superfinishing on all our Speedtek Products.
(This process will increase the time from when we could dispatch the kit, please email us if you have any questions)
Superfinishing is a metalworking process that improves surface finish and workpiece geometry. This is achieved by removing just the thin amorphous surface layer left by the last process with an abrasive stone to grind the gears and other parts ; this layer is usually about 1 μm in magnitude. Superfinishing, unlike polishing which produces a mirror finish, creates a cross-hatch pattern on the workpiece.
Advantages of superfinishing include: increasing part life, decreasing wear, closer tolerances, higher load bearing surfaces, better sealing capabilities, and elimination of a break in period.
Our solid 6-month unconditional warranty program for all our manufactured gearsets, you can be confident that your investment is well-protected.
Our extended warranty program is available, for more information : Extended Warranty Program now Available with our Performance Transmiss – Speedtek Auto Racing
We provide installation instructions for all our Dog Engagement Gearsets, please email us for this when you receive your kit.
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
4.4 ★★★★★
Based on 1774 reviews
Sort
Product Reviews
★★★★★ 5
These hold up very well
Color: White, Size: Standard (Pack of 2)
I have NO luck with pillows. I’ve been in stores & tried them. They seemed ok there. At home, nope. I’ve been getting headaches & neck aches from lousy pillows. I’ll change one, a few nights relief. It doesn’t help that I’m prone to headaches. After reading about different pillows, I settled on these. The reviews were better than so many different ones I was looking at. Including high priced & brand names. I bought the standard size. When I saw, “Customers Usually Keep This”, I kept my fingers crossed. When I received them, I took one out of the package & put my head on it & thought, oh no! This is too hard! I tried it again. Ok….. I slept on it & haven’t had any pains since. It’s soft but firm enough to keep my head from sinking & messing up my neck. I don’t move. No more flipping my pillow over. My head doesn’t go below my neck anymore! This has been 2 months now, but it hasn’t changed at all. I wake up happy, not complaining. No more pains or headaches. This saved me from losing days with a heating pad or an ice pack. The price was excellent for 2 pillows. I can’t believe a blind buy was the answer! These are incredible. Finally, something worked for me.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 13, 2026
★★★★★ 5
Awesome Pillows!
Color: White, Size: King (Pack of 2)
These pillows are super soft! I love them. I bought them when I caught a bad cold and needed to prop myself up. Worked so great! Definitely give these pillows a try. They're very reasonably priced too.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 29, 2026
★★★★★ 5
Exactly What I Needed! Comfortable, Protective & Great Fit
Color: Grey, Size: King (Pack of 1)
I bought the Utopia Bedding Waterproof Mattress Protector (King, Grey) after some recent accidents from my toddler and let me just say—it’s a lifesaver.
First off, it actually fits my king-sized mattress perfectly and stretches easily over the 14-inch depth with room to spare. It doesn’t bunch up or slide around like cheaper ones I’ve tried. The elastic is strong and holds in place like a fitted sheet.
The grey color is sleek and neutral, which is a nice change from the usual white protectors. It’s also surprisingly soft and quilted, so it doesn’t have that crinkly, plastic feel you get with some waterproof covers. You’d barely know it’s a waterproof layer—zero noise when moving around at night.
As for protection—it passed the test. We had a minor spill and it didn’t leak through to the mattress. It washed easily in my machine and came out looking brand new.
For the price, quality, and comfort, this mattress protector is an excellent buy. Highly recommend if you have kids, pets, or just want to extend the life of your mattress!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 31, 2025
★★★★★ 5
Nice mattress cover for a decent price!!!
Color: Grey, Size: Queen (Pack of 1)
heavy duty, nice and thick padding that fits the bed right, excellent price with easy installation. It is waterproof part from leakage
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 15, 2026
★★★★★ 5
Great for protecting my beds soft , quiet , and easy to clean
Color: Grey, Size: Queen (Pack of 1), Color: Grey, Size: Queen (Pack of 1)
I had to purchase since a family member had surgery and wanted to protect the mattress. It is a sleep number and this waterproof cover fit good and I like that it is not noisy. I am considering purchasing for the other beds in my house because I like it so much. It is soft and quiet and waterproof, Good product. I like the different colors available.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 17, 2025