Which extra parts does an early AP1 need?

Early AP1 cars with Honda model codes AP1-100, AP1-110 and AP1-120 need two genuine upper arms, 52390-S2A-J02 for the right and 52400-S2A-J02 for the left, plus four 90172-SP0-000 damper bracket bolts. They are not included. Later AP1-130, AP1-135, AP1-200 and AP2-100 cars need nothing extra.

Is the Reinforced Rear Subframe for AP1 cars worth it on an AP2?

Yes, for a hard-driven car. On an AP2 or late AP1 the Reinforced Rear Subframe for AP1 cars adds rigidity and resists sag rather than changing geometry. The biggest change comes on an early AP1, which also gains the later rear suspension geometry.

Will it clear my aftermarket exhaust?

Usually, but not always. Depending on how an aftermarket exhaust is routed, it can touch the subframe in places. The manufacturer advises pressing a small dent at the point of contact so the parts clear, and states that doing so has no effect on rigidity.

Can I install it myself?

The manufacturer recommends installation by a professional shop. The rear suspension and subframe have to be removed, the factory torque values must be followed, and the car needs a full wheel alignment afterwards. Early AP1 cars also need the extra genuine parts fitted at the same time.

No weight figure is published. The manufacturer explains that only the minimum plates were added at the most stressed points, so the subframe is very light while gaining rigidity. It is finished in anti-rust paint for a service life comparable to the factory part.

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Description

J’s Racing Reinforced Rear Subframe for AP1 / AP2 Honda S2000

J’s Racing’s Reinforced Rear Subframe for AP1 and AP2 S2000s takes a new genuine AP2 rear subframe, with its revised suspension geometry, and adds reinforcement where the Osaka tuner’s Super Taikyu and time attack cars showed the loads concentrate. Twelve welded plates box the arm bases and bars stiffen the sections that twist. Fitted to an early AP1, it brings the later geometry that J’s Racing says transforms rear-end control, which makes it most valuable to high-mileage or circuit-driven early cars. Late AP1 and AP2 owners gain rigidity and protection against sag.

Development and Testing

Only the minimum plates needed were added at the points under most strain, so the subframe stays very light while gaining rigidity. Each one is hand built by experienced craftsmen to keep weld heat from warping it, then finished in anti-rust paint. A sagging subframe can show up during a corner weight alignment as abnormal damper height, ride height or corner weight readings, or corner weights that lag behind damper height changes.

Features

New AP2 rear subframe with the later suspension geometry
Twelve welded plates box in the arm bases where load concentrates
Reinforcing bars welded across torsionally weak sections
Reduces body pitching for a more controllable car on road and track
Very light for the stiffness gained, with an anti-rust finish

Applications

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

Notes

Early AP1 cars, Honda model codes AP1-100, AP1-110 and AP1-120, also need genuine Honda parts sold separately: 52390-S2A-J02 right rear upper arm, 52400-S2A-J02 left rear upper arm and four 90172-SP0-000 damper bracket bolts
AP1-130, AP1-135, AP1-200 and AP2-100 cars need no additional parts
Some aftermarket exhausts may touch the subframe; J’s Racing advises dimpling the contact area and states this does not affect rigidity
Professional installation and a wheel alignment afterwards are required
Supplied new, not as a core exchange
Made in Japan; Bulletproof Automotive checks the lead time with J’s Racing USA after your order is placed

Frequently Asked Questions

Which extra parts does an early AP1 need? Early AP1 cars with Honda model codes AP1-100, AP1-110 and AP1-120 need two genuine upper arms, 52390-S2A-J02 for the right and 52400-S2A-J02 for the left, plus four 90172-SP0-000 damper bracket bolts. They are not included. Later AP1-130, AP1-135, AP1-200 and AP2-100 cars need nothing extra.
Is the Reinforced Rear Subframe for AP1 cars worth it on an AP2? Yes, for a hard-driven car. On an AP2 or late AP1 the Reinforced Rear Subframe for AP1 cars adds rigidity and resists sag rather than changing geometry. The biggest change comes on an early AP1, which also gains the later rear suspension geometry.
Will it clear my aftermarket exhaust? Usually, but not always. Depending on how an aftermarket exhaust is routed, it can touch the subframe in places. The manufacturer advises pressing a small dent at the point of contact so the parts clear, and states that doing so has no effect on rigidity.
Can I install it myself? The manufacturer recommends installation by a professional shop. The rear suspension and subframe have to be removed, the factory torque values must be followed, and the car needs a full wheel alignment afterwards. Early AP1 cars also need the extra genuine parts fitted at the same time.
How heavy is it? No weight figure is published. The manufacturer explains that only the minimum plates were added at the most stressed points, so the subframe is very light while gaining rigidity. It is finished in anti-rust paint for a service life comparable to the factory part.

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 Reinforced Rear Subframe for AP1 / AP2 Honda S2000 [HSF-S1-R]

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J’s Racing Reinforced Rear Subframe for AP1 / AP2 Honda S2000

Development and Testing

Features

Applications

Notes

Frequently Asked Questions

About J’s Racing

Reviews