The upgraded Nissan S-chassis rear suspension kit is designed with racing in mind. We have added cool and unique features, including a new "compression" design toe arm, upgraded camber arms, and reinforced knuckles.
Top-grade materials with optimized design have resulted in a significant reduction in weight. The knuckles weigh approximately 2.7kg while being able to withstand peak loads of 5–6G at the tire contact patch on a 1100kg car. The S14 Wisefab knuckles feature revised kinematics compared to OEM, incorporating anti-squat, higher roll centers, less camber gain, and adjustable bump steer for maximum grip and performance. All parts in this suspension kit are also available as spare parts.
Recommended alignment parameters are as follows:
Camber: -0.5
Toe: 3 to 10 mm toe-in per side
- New and unique toe arm design. It is now called a "compression arm" because it compresses under strong impact. This reduces the likelihood of damage to the subframe, knuckles, and coilovers.
- Attention! You can also upgrade your pre-2021 Wisefab S14/S15 rear suspension kit to the new toe arm design by purchasing the "S14 / S15 Rear Suspension Mod Kit."
- New camber arms have been included in this kit for a while now, but it is still worth mentioning that the "double adjuster" makes camber adjustment extremely easy.
- The upgraded knuckles have been reinforced and now offer more room for bump steer adjustment.
- Beyond just drop knuckles, the kinematics have been revised. Maximum grip is the keyword, and drop knuckles alone are not enough when you need a combination of proper roll center position, camber gain, anti-squat, and bump steer. That is why we have overhauled the kinematics.
- Light and strong. It is over 10kg lighter than OEM components while maintaining the necessary strength and rigidity.
- Bump steer adjustment. You can adjust the bump steer by changing the position of the rod end in the slot.
- CrMo rod ends and spherical bearings.
Before placing an order
〇 About Import Consumption Tax
At the Shaftoya shopping site, we pay the import consumption tax incurred at the time of import on your behalf, so there are no additional charges beyond the total amount paid at checkout.
〇 Checking Compatibility
Since our entire product database is based on North American vehicles (USDM cars), please check whether the products can be installed on Japanese vehicles (JDM cars) before ordering. (If you are unsure whether a listed product is compatible with your vehicle, please feel free to contact us. Our support team will investigate for you.)
If you order without confirming compatibility, we cannot accept returns due to incompatibility.
Please note that even if items are sorted by selecting the year, manufacturer, and model using the tabs on our top page, it does not necessarily mean they will fit Japanese-model vehicles without modification.
All products have been translated into Japanese using translation software. As there may be confusing expressions, please contact us before ordering if you have any questions.
○ Regarding Shipping
Shipping costs are paid at the time of payment. Shipping estimates are calculated automatically when you enter your delivery address on the checkout page. For large items such as body parts, the actual shipping cost may occasionally differ significantly from the automatically calculated amount. In such cases, we will contact you individually via email.
Basically, all products are shipped internationally from our warehouse in the United States. Unlike domestic shipping in Japan, international shipping takes about 7 to 14 days, so please allow plenty of time when ordering. If you are in a hurry, please contact us in advance to confirm the delivery date. Note that all products are transported by air. They are never shipped by sea freight.
○ Regarding Japanese Vehicle Inspection (Shaken) Compatibility
All products we handle are basically designed and manufactured outside of Japan. Please note that they are not compliant with the "Japanese Vehicle Inspection System," and we cannot provide strength evaluation documents or similar paperwork for the Japanese inspection system. Therefore, all parts are sold for the purpose of "use on circuits, private property, or off-road," and installation and use are at your own risk.
○ Regarding Warranty
Please check the contents immediately upon arrival of the product. Since all products are shipped internationally from outside Japan, there may be shipping damage to the packaging or the product itself. Please understand that we will only provide returns, refunds, or replacements for products with shipping damage, defective items, or items different from what was ordered if you contact us within 7 days of receipt. Furthermore, regarding products sold through our company, we will handle warranty-related issues "only through us." Please note that we do not handle matters through other companies or distributors located in Japan.