Optimised gear ratios to make best use of engine torque. Full length sequential barrel to minimise moving parts. Full gear shift travel neutral for ease of use. Zero over travel gear shift system. Low friction barrel position detent. Bespoke concentric clutch slave with internal pipework for ease of plumbing. This shifter will convert your standard H-pattern gearbox to sequential operation with a simple bolt fitting for repeatable quick shifts. This product has been designed for easy instaliation for anyone with basic mechanical skills. Get the next gear every time! It’s not possible to get the wrong gear with this shifter. 'Worlds Strongest Sequential Transmission @ 1800 ftlbs' 6XD Sequential Transmission 5 or 6 Speed. Any available ratio stack - Any shifter setback option of 22' - 24' - 26' Delivered anywhere in the USA FREE! 100% RACE READY!.All hand built units are generally 4 week lead time prior to shipping. Today, we continue to deliver extraordinary transmission products to our racing, specialist and OEM customers. We have the capability to design, develop and manufacture high performance transmission products for customers who demand the best. Our race-bred DNA comes from over 60 years of working with the top racing teams and OEM car manufacturers.

1. 6 Speed Sequential Gearbox
2. Sequential Gearbox Conversion Kit
3. Sequential Gearbox Manufacturers
4. Sequential Gearbox Vs Manual

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6XD RACING TRANSMISSIONS

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6XD Modular Design Advantages

The 6XD Sequential Gearbox has what NO OTHER sequential Offers! 250+ ratios, replaceable dog-rings vs gears, independent shifter barrels, rotatable forks, (12) inputs, 6XD can be rotate 90* for lower crank centerline to the ground!

6XD Simplicity of Service

Swapping out drop-gears for longer-shorter overall stack in 8-10 minutes! Replaceable dog-rings/sliders in 15-20 minutes, rotating shift handle for exact location YOU want!

6XD Low Cost in Stock Items

6XD is designed, engineered to have DOUBLE the life & STRENGTH regarding internal wear parts such as forks, shifter barrels, and gear sets! Clients mentioned they have saved thousands of dollars already.

100% American Made - In House

6XD sequential components are 100% made in USA between SS mfg and Gforce transmissions, this allows us to also make custom items quickly for YOU and make changes to current parts which may benefit your special application!

6XD built by Senior Lead Builder w/30+ years Winning Experience

RTS/Rick Lamber, he has built a significant amount of award winning race transmissions over the years. Every unit runs on dyno spin-rig for 45 minutes ensuring top performance for plug n play installs.

Award Winning Customer Service & Installation Assistance

We’re 100% committed making sure YOU are taken care of with experienced guidance, assembling everything needed for a Plug n Play package! YOUR one stop shop for SUCCESS!

Our 6XD Sequential Gearbox.

Went from drawings on paper to actual production racing product in 11 months! Unheard of right?, not really when you combine the proven experience of Gforce Transmissions, RTS INC and SS mfg engineer Clay Stephens working together to deliver winning results!
1st Year = * Not One Failure Ever / 31 wins / 5 Championships *

* The next racing product on our design board is a 6XD-TransAxle unit for C5, C6, and C7 corvette. This project is already underway, big thanks to Brett Bradbury owner of LS PERFORMANCE in Dallas, TX for sending us his Corvettes.

6 Speed Sequential Gearbox

* This NEW 6XD-TransAxle will mate up to the RTS1000+ Winters quick change rear, which has proven to be “Unbreakable” past 3 years in the Formula Drift Pro series, with 1400ftlbs beat thru it.

* We are planning to have this 6XD-TransAxle project available in spring of 2021!

Sequential Gearbox Conversion Kit

* 6XD AWD sequential gearbox is being looked at for late 2021!

Free minecraft maps, mods, and texture packshome. * Email us with your ideas for new racing projects, we make dreams a reality!

Our 6XD Team has an Impressive Winning Resume to prove it:

“100+ Wins, 9 World Championships regarding C.A.R.T, IndyCar, NASCAR, World Drift Championship, Formula Drift, and now the Trans-Am Series!

ACP Motorsports / Trans-Am Series / 6 Wins 2019 = 5XD!

“The 5XD sequential gearbox is the smoothest shifting, most reliable, and trouble free racing transmission I have ever had in any race car I’ve driven in 50 years. The customer service I have experienced regarding RTS INC owner Rick Lamber / SS mfg owners Clay Stephens & Skyler Schipper has been unmatched by any other driveline supplier ever!”

Kerry Hitt
Driver/Owner

FD Pro1 Series

“It really is the World’s BEST sequential I ever used, the 6XD is truly Insane, thank you!

I’m so glad to have RTS INC and SS mfg apart of our racing program”

Cameron Moore
Pro1 Driver

FD Pro2 Series / 5 Wins & Lone Star Drift Championship 2019

“The 6XD gearbox has been such a drastic improvement to our car this season!

The box has taken any and all abuse we could’ve thrown at it. It’s been used in more than 15 high intensity drift events this season and the reliability has been impeccable!

The support of the RTS INC / SS mfg team has been amazing and they’ve developed one incredible product!!!””

Nick Noback
Pro2 Driver

Call the Quaife Team on +44 (0) 1732 741144 Mon to Thu 9am-5.30pm, Fri 9am-3.30pm

• 1 Browse online
• 2 Call & chat
• 3 Get tips & support
• 4 Buy your products

Sequential transmissions are commonly found on motorbikes, where the action of selecting gear is limited to the next higher or lower gear; selecting a specific gear, as is possible in an H-pattern gearbox, is not possible in a sequential transmission.

Sequential Gearbox Manufacturers

Sequential transmissions use dog engagement for ultra fast gear changes where a synchromesh engagement would not be fast enough. This allows gear changes to be made with very brief interruption of torque from the engine, which means changes can be made without the need to use the clutch.

Sequential gearboxes should not be confused with DSG style gearboxes that are fitted to many new road cars. A DSG is still a manual, synchromesh gearbox, or technically two manual gearboxes in one, and uses two clutches to achieve much faster shift times by pre-selecting the next gear. DSG transmissions are typically heavier than a true sequential gearbox due to this though.

Quaife Engineering offers a range of complete universal sequential transmissions, as well as numerous vehicle specific sequential gearboxes and gearkits.

Call the Quaife Team on +44 (0) 1732 741144 Mon to Thu 9am-5.30pm, Fri 9am-3.30pm

Sequential Gearbox Vs Manual

• 1 Browse online
• 2 Call & chat
• 3 Get tips & support
• 4 Buy your products