C1 Hill Climb Racing Gear Kit with Close-Ratio Transmission & Final Drive (Motorsport Use)
C1 Hill Climb Racing Gear Kit with Close-Ratio Transmission & Final Drive (Motorsport Use)
Upgrade the transmission performance of your Citroën C1 1.0 1KR-FE with this Hill Climb Performance Gear Kit with Final Drive, developed specifically for compatible vehicles equipped with the 20TT manual gearbox.
Designed for hill climb, sprint and time attack competition, this motorsport gear set combines close-ratio gearing with a 4.417 final drive to help improve acceleration, reduce RPM drop between gear changes and keep the engine closer to its effective power range.
Product Overview
This Citroën C1 Hill Climb Gear Kit is designed for motorsport applications using the compatible 20TT manual gearbox and 1KR-FE 1.0 engine.
The kit includes a complete set of close-ratio gears together with a dedicated 4.417 final drive.
Compared with wider standard road-oriented gear ratios, closer gear spacing helps reduce the drop in engine speed after each shift, improving acceleration and allowing the engine to remain closer to its useful power range.
This transmission setup is particularly suitable for technical competition environments with repeated acceleration, tight corners and steep gradients.
Citroën C1 Compatibility
- Manufacturer: Citroën
- Model: C1
- Engine: 1.0 1KR-FE
- Gearbox: 20TT manual gearbox
- Product Type: Close-ratio gear kit with final drive
- Application: Motorsport competition
Compatibility must be confirmed before ordering. Verify that your Citroën C1 is equipped with the correct 20TT manual gearbox.
If you are unsure about fitment, contact Art of Speed with your vehicle and gearbox details before placing your order.
Optimized Gear Ratios
- 1st Gear: 2.790
- 2nd Gear: 1.940
- 3rd Gear: 1.470
- 4th Gear: 1.210
- 5th Gear: 1.070
- Final Drive Ratio: 4.417
These ratios are designed to provide closer spacing between gears, helping the engine remain within a more effective operating range during hard acceleration.
The 4.417 final drive further shortens the overall gearing, supporting stronger acceleration on steep gradients and out of slower corners.
Key Features
- Developed for compatible Citroën C1 20TT gearboxes
- Compatible with 1.0 1KR-FE applications
- Complete close-ratio gear set
- Includes 4.417 final drive
- Designed for stronger acceleration
- Reduced RPM drop between gear changes
- Precision-machined motorsport components
- Designed for high-RPM competition use
- Suitable for hill climb, sprint and time attack racing
Hill Climb Performance
Hill climb competition places particular demands on a transmission, with steep gradients, frequent gear changes and repeated acceleration from relatively low speeds.
Close-ratio gearing reduces the difference between consecutive gear ratios, helping to minimise RPM loss when changing gear.
Combined with the shorter 4.417 final drive, this setup is designed to favour acceleration and responsiveness over maximum theoretical top speed.
The result is a transmission configuration particularly suited to technical hill climb, sprint and time attack applications.
Installation & Professional Fitment
Professional installation is required.
This gear kit must be installed by an experienced motorsport gearbox or transmission specialist.
Correct assembly, bearing setup, preload, clearances and gearbox inspection are essential for reliable operation.
The condition of bearings, synchronisers and other gearbox components should be inspected during installation and replaced where necessary.
Production & Delivery Time
This gear kit is made to order.
Estimated production and delivery time: approximately 7 to 8 weeks after purchase.
Production times may vary depending on manufacturing schedules and component availability.
Frequently Asked Questions
Is this gear kit designed for the Citroën C1?
Yes. It is intended for compatible Citroën C1 1.0 1KR-FE applications equipped with the 20TT manual gearbox.
Does the kit include the final drive?
Yes. The kit includes the complete close-ratio gear set together with a 4.417 final drive.
What is the advantage of close-ratio gearing?
Close-ratio gearing reduces the RPM drop between consecutive gears, helping the engine stay closer to its effective power range during acceleration.
Is this kit suitable for hill climb racing?
Yes. The gear ratios and final drive are specifically focused on acceleration-oriented motorsport applications such as hill climb, sprint and time attack.
Does the shorter gearing affect top speed?
Yes. Shorter gearing generally improves acceleration but can increase engine RPM at a given road speed and reduce theoretical maximum speed.
Does professional installation matter?
Yes. Correct gearbox assembly and setup are essential. Installation should be carried out by an experienced motorsport transmission specialist.
How long does production take?
This product is made to order, with an estimated production and delivery time of approximately 7 to 8 weeks.
Motorsport Use — Returns & Warranty
This product is intended exclusively for motorsport use.
All sales are final: no returns are accepted and no commercial warranty is provided.
This does not affect any statutory rights that cannot legally be excluded.
For Motorsport Use Only: This product is intended for off-highway competition use and is not approved for use on public roads. The user is responsible for compliance with applicable local laws, technical regulations and competition requirements.
Images are for illustrative purposes only and may not accurately represent the final product supplied. Actual appearance, finish, dimensions and specific details may vary.
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