Authorized Dealer

OS Giken OS-FR Series Sequential Gearbox 7 Speed

OS Giken OS-FR Series Sequential Gearbox

$17,000.00

Sale Sold out

Shipping calculated at checkout.

Gears 7 Speed 5 Speed 6 Speed

Available to order

Quantity

Shipping & returns

Available to order. Contact us before ordering to confirm lead time.

Shipping details

In-stock orders are processed within 48 hours; transit time is additional.

International orders include export processing and customs clearance. Duties, taxes and brokerage are extra; final freight charges may change after remeasurement.

Read the shipping policy

Returns

Need help with a return? Request authorization within 30 days of delivery for eligible unused, uninstalled items. See details for exclusions and applicable fees.

Read the full return policy

Return details & how to start

Request return authorization (RMA) within 30 days of delivery for eligible items. Keep items unused and uninstalled, with original packaging and accessories. Electronics, liquids, special orders and other categories are excluded.

Email sales@frsport.com with RETURN and your order number in the subject to request an RMA. Please wait for return authorization before sending your item back.

Wrong part/size or change of mind: a 20% return processing fee applies, plus applicable shipping costs.

Original shipping is non-refundable. For orders shipped free, the actual outbound shipping cost is deducted from the refund. Return shipping is prepaid by the customer.

After payment capture, cancellations and refunds generally incur a 5% processing fee, except for our error, confirmed defects or confirmed carrier loss. The 5% and 20% fees do not stack; only the greater applicable fee applies. Store credit waives the 5% fee, but applicable return fees remain.

Missing, incorrect or transit-damaged items: report within 3 business days of receipt with photos of the product and packaging.

For defective items, contact us for help with the manufacturer's warranty process. The manufacturer decides the claim.

Description

The OS-FR5 and OS-FR7 Sequential Transmissions are specifically designed for use in JDM sport-compact and roadster vehicles.

The “FR” of OS-FR series name designates the front-engine, rear-wheel-drive vehicle specific application for this transmission series. OS-FR series Sequential Transmissions are designed with tear-drop shaped transmission housing and top-mounted gear selector to allow ease of fitment in limited transmission tunnel space often found in compact FR vehicles. A few examples of vehicles suited for the OS-FR series transmission are Mazda MX-5 (NA/NB), Mazda RX7 (FD), or Honda S2000.

OS-FR5

The OS-FR5 is a 5-speed iteration of OS-FR series Sequential Transmission that is designed to handle high torque and power output, while remaining within the spatial constraints of compact FR vehicles. Developed through vigorous testing, the dog-ring and gear design of FR5 allows relatively low shifting efforts for its torque capacity. Manufactured with carefully selected raw-forged materials, the OS-FR5 can handle up to 575 ft/lbs of torque.

OS-FR7

The OS-FR7 is Japan’s very first 7-speed sequential transmission. Contrary to common designs where there is a direct-drive gear within the transmission, the FR7 does not have a direct-drive gear due to a unique drop-gear design. The drop-gear design minimizes shifting effort and allows quick and precise shifting. Along with the ease of shifting, the spread of 7 gears in FR7 allows the vehicle to easily stay in power band regardless of the engine characteristics. Manufactured with carefully selected raw-forged materials, the OS-FR7 can handle up to 430 ft/lbs of torque.

FR5 & FR7 Gear Ratios