Can I reuse my original ring gear bolts?

No. The original ring gear bolts cannot be reused. Install the ten reinforced bolts supplied with the set, which take higher tightening torque than stock and help prevent the bolt loosening the manufacturer names as a major cause of differential failure. Its SPL differential distance collar, sold separately, is also strongly recommended.

Which ratio should I choose for the Final Gear Set for AP1 cars?

The Final Gear Set for AP1 and AP2 cars comes in 3.909, 4.100, 4.300, 4.444 and 4.777 ratios. The 4.100 matches the factory gearing, while the others let you suit the gearing to the venue, from street and gymkhana use to low, medium and high speed circuits.

What is the difference between the two coating options?

DLC and WPC puts a diamond-like carbon coating on the driven gear and WPC treatment on the ring gear, aimed at low friction and high durability. WPC with PIP Coating combines WPC with a PIP-Sn ceramic film that the manufacturer says improves durability, oil temperature control and quietness over untreated gears.

Is the 4.1 version based on a stock gear set?

Yes. The 4.1 version starts as the genuine Honda S2000 final gear set, part 41220-PCZ-023, which the manufacturer then treats with its coating package. It keeps the factory gearing while addressing the pinion breakage the maker says the stock 4.1 suffers during sports driving.

Should I install it myself?

No. The manufacturer recommends precise assembly by a professional shop. A final drive needs careful setup to run quietly and last, and it should go in with the supplied reinforced bolts and, ideally, the separately sold SPL differential distance collar.

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BP PRICING DIFFERENCE

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Description

J’s Racing Final Gear Set for AP1 / AP2 Honda S2000

J’s Racing’s Final Gear Set for AP1 and AP2 S2000s targets what the Osaka tuner calls the car’s biggest weakness: a factory 4.1 final drive that lacks strength and can shatter its pinion under sports driving. Built on lessons from J’s Racing’s Super Taikyu program, each set pairs a pinion and ring gear with surface treatments that cut friction, lower differential oil temperature and stretch overhaul intervals, plus ten reinforced ring gear bolts. Five ratios let you match gearing to the venue. It is aimed at owners who track the car on grippy tires and is overkill for a gently driven street car.

Features

Five final ratios, including the factory 4.100
Lower friction loss keeps differential oil temperature down
Longer overhaul cycle and reduced risk of differential failure
Reinforced ring gear bolts that accept higher tightening torque than stock
WPC micro-dimples hold oil to limit tooth wear
PIP-Sn film penetrates about 6 microns into the surface for a lasting effect

Specifications

Ratio, 3.9 option: 3.909
Ratio, 4.1 option: 4.100, the factory ratio
Ratio, 4.3 option: 4.300
Ratio, 4.4 option: 4.444
Ratio, 4.7 option: 4.777
PIP-Sn coating hardness: HV1500
PIP-Sn coating heat resistance: 900 degrees

What’s Included

Pinion gear (x1)
Ring gear (x1)
Reinforced ring gear bolts, part KRG-S1 (x10)

Applications

Honda S2000: AP1 | 1999-2003 | 2.0L F20C
Honda S2000: AP2 | 2004-2009 | 2.2L F22C

Notes

Options: DLC and WPC pairs a DLC-coated driven gear with a WPC-treated ring gear, while WPC with PIP Coating adds PIP-Sn to WPC-treated gears
Use only the supplied reinforced ring gear bolts, as the original bolts cannot be reused
J’s Racing strongly recommends its SPL differential distance collar, which is sold separately
Precise assembly by a professional shop is recommended
Matches the High Traction LSD for the AP1 / AP2 Honda S2000 for a full differential rebuild
Supplied from Japan through J’s Racing USA; Bulletproof Automotive confirms the lead time when the order is placed

Frequently Asked Questions

Can I reuse my original ring gear bolts? No. The original ring gear bolts cannot be reused. Install the ten reinforced bolts supplied with the set, which take higher tightening torque than stock and help prevent the bolt loosening the manufacturer names as a major cause of differential failure. Its SPL differential distance collar, sold separately, is also strongly recommended.
Which ratio should I choose for the Final Gear Set for AP1 cars? The Final Gear Set for AP1 and AP2 cars comes in 3.909, 4.100, 4.300, 4.444 and 4.777 ratios. The 4.100 matches the factory gearing, while the others let you suit the gearing to the venue, from street and gymkhana use to low, medium and high speed circuits.
What is the difference between the two coating options? DLC and WPC puts a diamond-like carbon coating on the driven gear and WPC treatment on the ring gear, aimed at low friction and high durability. WPC with PIP Coating combines WPC with a PIP-Sn ceramic film that the manufacturer says improves durability, oil temperature control and quietness over untreated gears.
Is the 4.1 version based on a stock gear set? Yes. The 4.1 version starts as the genuine Honda S2000 final gear set, part 41220-PCZ-023, which the manufacturer then treats with its coating package. It keeps the factory gearing while addressing the pinion breakage the maker says the stock 4.1 suffers during sports driving.
Should I install it myself? No. The manufacturer recommends precise assembly by a professional shop. A final drive needs careful setup to run quietly and last, and it should go in with the supplied reinforced bolts and, ideally, the separately sold SPL differential distance collar.

About J’s Racing

J’s Racing was established in Osaka in 1989, as VTEC engines and lightweight Civics and Integras were changing what a Honda could do, and it has built parts for Hondas ever since. The company develops engine response, suspension, braking, cooling and aerodynamics together as one system, then proves the parts in time attack, gymkhana, endurance and circuit racing. Its Fit lapped Tsukuba Circuit in 1’00.459, and its naturally aspirated AP1 S2000, the Maou car, became the company’s reference build for the Honda roadster. Every J’s Racing part is designed and tested in Japan, and J’s Racing USA in Carson, California handles distribution in the United States.

Additional Information

The Bulletproof Automotive website contains many thousands of products purchased in multiple different currencies. All of the prices are entered manually and accurately at the time of entry. Due to the consistently fluctuating international exchange rates, at times prices may not be able to be honored at their original intended rate. We apologize for any inconvenience this may cause, unfortunately our website is unable to compensate dynamically for what can at times be volatile changes in the cost of items due to currency values fluctuating, changes in prices from suppliers, changes in shipping and import duties, and other factors. Rest assured that any order you place on line will be at zero risk to you in this area. If in the event your order cannot be fulfilled at the original intended website price we will offer you a 100% refund, no questions asked. We will continue to do our best to maintain updated prices and we will always continue to offer our price match guarantees as well to ensure our prices are always the best for you. In short, prices may change without notice. It is always advised to give us a call prior to placing your order online to confirm availability and to confirm current pricing.

Shipping Policy

Items that are in stock in the US, either at Bulletproof’s warehouse or at a supplier’s warehouse, are generally delivered within 7-10 days. Special order items from overseas take considerably longer. As a courtesy Bulletproof offers delivery estimates to our customers which take into consideration manufacturer availability and shipping schedule. These estimates represent our best guess based on previous orders from the manufacturer and do not in any way imply a guaranteed delivery window. Many manufacturers work in a “just in time” inventory system and often take 2-20+ weeks to produce an item once an order is submitted. All deliverable items are then sent to our Japanese warehouse. Bulletproof ships a minimum of one full ocean freight container every month from Japan, oftentimes more than one a month. Ocean freight takes an average of 4 weeks. Typically it breaks down to one week in Japan for paperwork and customs, two weeks by boat and one week in US customs/clearance. Due to the wide number of variables between manufacturer and shipping schedules, delivery estimates are simply just that – estimates. We attempt to estimate conservatively and we usually deliver faster than our estimates suggest. It is not Bulletproof’s policy to guarantee delivery time of any special order item, this is impossible for us to do. By ordering you acknowledge that there is no required delivery ETA and an order may not be canceled or altered due to manufacturing or shipping delays, all ETA’s are provided as a best guess only. Please review the full Terms & Conditions here.

BP Pricing Difference

We do pricing a little differently on our JDM brands and we believe in making things simple and clear. No hidden fees or surcharges. Every price you see includes the shipping cost to our office in Los Angeles, California and all the associated taxes/duties/fees for bringing the products into the US. The only shipping you ever pay is from our facility in the US to your location. Be wary of resellers that don’t include the cost of international shipping in their pricing on JDM parts. While we believe we’ll always have the lowest all-in price on JDM products, we offer a price match guarantee for all authentic parts purchased from authorized dealers as well. For many international customers, it’s much more affordable to ship from the USA than from Japan directly, as the air freight and ocean freight costs are typically much less. However, for customers looking to ship directly from Japan outside of North America, or domestically in Japan, we can provide pricing specifically for that scenario. Please do not hesitate to contact us with any pricing questions or concerns. Please email us at sales@bulletproofautomotive.com with any inquiries.

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J’s Racing Final Gear Set for AP1 / AP2 Honda S2000

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J’s Racing Final Gear Set for AP1 / AP2 Honda S2000

Features

Specifications

What’s Included

Applications

Notes

Frequently Asked Questions

About J’s Racing

Reviews