Associated FT 4-Shoe Adjustable Clutch System
Brand: Associated
Part No: AS81420
Shadow Stock: Usually ships next day
The Associated FT 4-Shoe Adjustable Clutch System (AS81420) brings fast, track-side tuning to 1/8 nitro racing. Developed by Team Associated’s Area 51 engineers, its patent-pending design lets you change clutch spring tension without swapping springs or removing the engine. Adjust the power delivery to match changing grip levels and driving style in seconds.
How It Works
A single set screw in the flywheel engages a spring cam. Turning the screw rotates the cam to increase or reduce spring tension. Shut off the engine, make a quick adjustment, and you’re back on track. The FT 4-Shoe Adjustable Flywheel is hard-anodised aluminium, while the FT Spring Cam is hardened steel. The adjustable flywheel and spring cam are compatible with existing Team Associated 4-shoe clutch components (shoes, springs, collet, flywheel nut and pins).
Tuning On The Fly
- CCW (counter-clockwise): reduces spring tension for earlier engagement and a softer, more manageable delivery on lower grip.
- CW (clockwise): increases spring tension for later engagement and a more aggressive response on higher grip.
Features
- Patent-pending system adjusts spring tension without changing springs.
- No need to remove engine, clutch, or other components to tune engagement.
- Adjustable flywheel and spring cam work with Team Associated 4-shoe clutch parts.
- Hard-anodised aluminium flywheel and hardened steel spring cam.
- Suggested compatibility includes RC8B3 series and most 1/8 nitro buggies and truggies.
Upgrade Options
- Upgrade an existing Team Associated 4-shoe clutch:
- Use #81421 FT 4-Shoe Adjustable Flywheel and Spring Cam.
- Re-use existing springs, shoes, collet, nut, pins and clutch bell.
- Requires one M3x5 mm set screw (AE #89219) and red thread-locking compound.
- Build new or convert non-Team Associated clutches:
- Use #81420 FT 4-Shoe Adjustable Clutch System (all hardware included).
- Requires red thread-locking compound.
Suggested Compatibility
- RC8B3 series
- Most 1/8 nitro buggies and truggies
What’s Included
- 1 Flywheel, 4 Shoe Adjustable
- 1 Spring Cam, 4 Shoe Adjustable
- 4 Clutch Shoe Springs, 0.95mm
- 2 Composite Clutch Shoes
- 2 Aluminium Clutch Shoes, hard
- 1 Clutch Nut, 4 Shoe Clutch
- 1 Brass Collet, 4 Shoe Clutch
- 4 Clutch Shoe Pins, 4 Shoe Clutch
- 1 Set Screw, M3x0.5x5mm
Secured by Stripe
After the 2016 1:8 scale World Championships, the Area 51 engineers began working on an idea to make our clutch system more easily adaptable to changing track conditions. After months of prototyping and testing, they came up with a patent-pending design that gives racers the ability to adjust the tension of the clutch springs -- without having to remove the clutch and change springs. In fact, the engine doesn't even need to be removed from the chassis to make the adjustment. The adjustment is done with a single set screw that engages with a spring cam. By loosening or tightening a set screw in the flywheel, the spring cam rotates within the flywheel to adjust the tension on the springs. This means you can make quick adjustments while in the pit lane.
To make a clutch adjustment, bring the car into the pit lane, shut off the engine, make a quick adjustment to the clutch set screw that engages the spring cam, and fire the engine back up. This is especially useful when track conditions change and you want to tune the power band to get the most comfortable power delivery.
- Turning the adjustment set screw CCW reduces the spring tension and makes the clutch engage sooner, thus "softening" the power delivery. This can make the car easier to drive on lower traction tracks.
- Turning the adjustment set screw CW increases the spring tension and makes the clutch engage later, making the power delivery more aggressive. This can be useful on higher traction tracks
- Patent-pending design allows for spring tension adjustments without changing springs.
- Make spring tension adjustments without removing engine, clutch, or any other components.
- Adjustable flywheel and spring cam are compatible with all existing Team Associated 4-shoe clutch components including shoes, springs, collet, flywheel nut, and flywheel pins.
- The FT 4-Shoe Adjustable Flywheel is made from hard anodized aluminum
- The FT Spring Cam is made from hardened steel
- Fits RC8B3 series and most 1:8 nitro buggies and truggies
To upgrade your existing Team Associated 4-Shoe clutch to the new adjustable model:
- Use #81421 FT 4-Shoe Adjustable Flywheel and Spring Cam
- Use existing springs, shoes, collet, nut, pins and clutch bell
- Requires one M3x5 mm set screw, AE #89219
- Requires red thread-locking compound
To upgrade your existing non-Team Associated clutch or to build the adjustable model with all new components:
- Use #81420 FT 4-Shoe Adjustable Clutch System. All hardware is included.
- Requires red thread-locking compound
- 1 Flywheel, 4 Shoe Adjustable
- 1 Spring Cam, 4 Shoe Adjustable
- 4 Clutch Shoe Springs, 0.95mm
- 2 Composite Clutch Shoes
- 2 Aluminum Clutch Shoes, hard
- 1 Clutch Nut, 4 Shoe Clutch
- 1 Brass Collet, 4 Shoe Clutch
- 4 Clutch Shoe Pins, 4 Shoe Clutch
- 1 Set Screws, M3x0.5x5mm
Key Info:
- Brand: Associated
- Part No: AS81420
- Barcode: 784695814202
Additional Categories:
Standard Shipping
£3.95 to most of the UK
Express Shipping
£6.95 to most of the UK
Worldwide Shipping
Available at checkout
Reviews
No specific product reviews yet, why not write one?WRITE A REVIEW
Questions & Answers
Yes, this should fit that engine for you
ASK A QUESTION
For more in depth queries, please contact us.



