Lotus Elise S1 Steering Knuckle New

brand new steering knuckle (often called a “hub carrier” or “upright”) for the Lotus Elise S1 can be challenging, as many original parts are now discontinued or only available as high-quality used units.

The S1 uses distinct components depending on the corner of the car. The front knuckles are made of extruded aluminum, while the rears are typically a larger casting designed to house the drive shafts.

1. Front Steering Knuckles (Aluminum)

The front uprights are synonymous with the “lightweight” ethos of the S1.

• Part Numbers: A111C0007F (Front Left) and A111C0008F (Front Right).

• New Availability: “New Old Stock” (NOS) is extremely rare. However, specialists like Seriously Lotus and Elise Shop occasionally secure batches of new-production units or high-quality refurbishments.

• Pricing: Expect to pay $400 – $600 per side if found new.

2. Rear Steering Knuckles (Hub Carriers)

The rears are more robust to handle the power delivery and toe-link attachments.

• Part Numbers: A111D0005F (Rear Left) and A111D0006F (Rear Right).

• New Availability: These are even harder to find new than the fronts. Most owners opt for used units that have been vapor-blasted and fitted with new bearings.

• Pricing: Used units average $250 – $400, while a rare new unit can exceed $700.

3. Aftermarket & Performance Alternatives

Because OEM parts are scarce, several Lotus specialists have developed “Uprated” versions that often exceed the strength of the original S1 parts:

• Steel/Forged Uprights: Some owners upgrade to the S2-style forged steel uprights (Part #A116C0002F). While heavier than the S1 aluminum, they are significantly stronger and less prone to “ear” failure under heavy track use. You will need S2-specific steering arms and brake brackets for this swap.

• Motorsport Uprights: Companies like ELTECH or Quantum produce billet aluminum uprights. These are strictly for high-end track builds and can cost upwards of $2,000 for a full set.