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Ships within 48 hours · Estimated delivery Sep 30 - Oct 5
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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
4.5 ★★★★★
Based on 23 reviews
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Product Reviews
★★★★★ 5
Good quality dog ball for playing fetch
Size: Medium
My dog and family love these chuck it balls to play fetch with our dog. They are durable and fun. They squeak which is added fun for any dog! Regular tennis balls my dog chews apart and they get pretty gross after playing and being left outside. These can be easily washed off and cleaned. These balls last! Would recommend to anyone with a dog and would purchase again.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 17, 2025
★★★★★ 5
Tough and sturdy
Size: Medium
Have lasted my dog for years now and she is a tough chewer. Worth the money
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 12, 2025
★★★★★ 5
One Tough Ball!
Color: Blue
Our dogs are loving this ball. Our 1 yr old hound is a world-class chewer and he can't make a dent in this ball. The interactive buzzing and bouncing keeps them entertained for long durations. It's a mite noisy but the barking from the 1 yr old is much louder, lol. Even turned off, they like playing with it and chewing on it. Based on the tough construction, we think it will last much longer than traditional chew balls.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 22, 2026
★★★★★ 5
My puppy’s favorite
Color: Orange
Great quality and built to last. My dog really enjoys playing with it and stays entertained for quite a while. The material is strong yet safe, and the included drawstring bag is a convenient extra for easy storage.
Is colorful and my become my puppy’s favorite.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 1, 2026
★★★★★ 1
If you love your dog…don’t buy this.
Color: Orange
We have a nonaggressive English cocker. She opened the ball every time she played with it. And yes, we are closing it as hard as we can. I do not recommend this toy for any dog! This is a dangerous toy for a dog that is not supervised.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 16, 2026
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