Genuine Nissan Skyline RB25DET Bigbox Gearbox — Brand New from JapanThe RB25 Bigbox (32010-AA520) is one of the most iconic JDM transmissions ever made. These are the same gearboxes fitted to the Nissan Skyline R34 GT-T from the factory — the last edition of this legendary box — and we source ours brand new, directly from Japan.Famous for being one of the strongest gearboxes out there, it's perfect as a replacement box or for a manual conversion build.Specifications Nissan Part Number: 32010-AA520 ER34 5-speed manual transmission (pull type) Can be converted to push type by changing the front cover — approx $200–$400 through local NZ suppliers Suited for any vehicle wanting to run the RB25DET Bigbox Does not include shift lever or transmission cross member Brand new — sourced directly from Japan 50% Pre-Order — Secure Your BoxWe have gearboxes arriving nearly every month. If we're out of stock, you can place an order and pay just 50% upfront to secure yours — stock moves fast. Once your unit lands, we'll collect the balance and send it out straight away.Pre-order arrival dates are estimates and may be subject to shipping or customs delays. You'll be kept informed of any changes.After Something We Don't Stock?If you're after a Japanese transmission or gearbox we don't carry, just ask — we can look at sourcing and importing it from Japan for you.