Project Kics Racing Composite R40 Lug Nut & Lock Set | M12 x 1.5 (AE86 Corolla / AW11 MR2 / AE92 Corolla)

Project Kics Racing Composite R40 Lug Nut & Lock Set

For 1983–1987 Toyota Corolla AE86, 1984–1989 Toyota MR2 AW11, and 1987–1991 Toyota Corolla AE92 coupe equipped with M12 × 1.5 right-hand studs and aftermarket 60° conical-seat wheels.

Overview

The Project Kics Racing Composite R40 Lug Nut & Lock Set is a 20-piece wheel-hardware set for the 1983–1987 Toyota Corolla AE86, 1984–1989 MR2 AW11 and 1987–1991 Corolla AE92 coupe applications. Fitment depends on M12 × 1.5 right-hand studs, aftermarket 60° conical wheel seats, adequate thread engagement and nut/adapter clearance, not the chassis name alone.

Each R40 lug nut uses a forged SCM435 chromoly-steel body with a free-floating A7075-T6 aluminum taper collar. The collar remains seated against the wheel as the nut is tightened, helping center the fastener while reducing rotational contact against the wheel seat.

Key Features

• M12×1.5 thread size
• 60° conical / tapered floating seat
• Forged SCM435 chromoly-steel lug-nut body
• A7075-T6 aluminum floating taper collar
• Compact 17 mm hex
• Open-ended design for standard or extended wheel studs
• Approximately 40 g per standard lug nut
• Approximately 44 mm overall length
• Glorious Black finish
• Includes 16 standard lug nuts + 4 locking lug nuts

Vehicle Fitment

Toyota Corolla — AE86

• 1983–1987: Trueno (JDM) / 4A-GE
• 1983–1987: Levin (JDM) / 4A-GE
• 1985–1987: GT-S (U.S.-Market) / 4A-GE / Manual
• 1984–1987: SR5 (U.S.-Market) / 4A-C

Toyota MR2 — AW11 / MK1

• 1984–1989: JDM / 4A-GE
• 1985–1989: U.S.-Market / 4A-GE
• 1986–1989: JDM Supercharged / 4A-GZE
• 1988–1989: U.S.-Market Supercharged / 4A-GZE

Toyota Corolla — AE92 Coupe

• 1987–1991: JDM Corolla Levin / Sprinter Trueno coupes / 4A-GE or 4A-GZE
• 1988–1989: U.S.-Market SR5 coupe / 4A-F
• 1988–1991: GT-S coupe (U.S.-Market) / 4A-GE / Manual
• 1990–1991: SR5 coupe (U.S.-Market) / 4A-FE

All applications require M12 × 1.5 right-hand wheel studs and aftermarket wheels with matching 60° conical lug seats.

Fitment Notes

• For aftermarket wheels with a matching 60° conical seat and M12 × 1.5 right-hand studs only. This is not blanket original-wheel fitment.
• Excludes flat/washer, mag/shank, ball/radius, inverted and other nonmatching seats or changed stud threads.
• The nut seat must contact the wheel fully, with adequate thread engagement and clearance for the nut and supplied adapter. Spacers, changed studs or hub conversions can alter these requirements.
• The full tapered surface of the floating collar must be supported by the wheel seat.
• The open-ended design accommodates standard or extended studs when the seat, engagement and clearance requirements are met.
• AE86, AW11 and AE92 four-lug applications use 12 standard nuts and four locks, leaving four standard nuts as spares.

Product Specifications

Brand: Project Kics
Series: Racing Composite R40
Product Type: Lug Nut & Wheel Lock Set
Thread Size: M12×1.5
Seat Type: 60° Conical / Tapered
Hex Size: 17 mm
Lug Body Material: Forged SCM435 Chromoly Steel
Floating Collar Material: A7075-T6 Aluminum
End Type: Open
Approx. Length: 44 mm
Approx. Standard Lug Weight: 40 g
Finish: Glorious Black
Quantity: 20 Pieces

Which Lug Nut Set Should You Buy?

Project Kics R40 — Best for extended studs and less rubbing against the wheel seat

Choose R40 if you need room for extended studs or want less rotational rubbing against the wheel seat: its open end leaves no cap for the stud to bottom against, while the floating taper collar stays seated as the nut turns. The 44 mm body has an open end rather than a cap; the wheel seat must support the full collar, and this set includes separate locking nuts.

RAYS L31 — Best for a shorter, understated look with separate wheel locks

Choose RAYS L31 if you want a more compact, closed-end appearance with conventional hex nuts and separate wheel locks. Its 31 mm standard nuts are shorter than the other two choices, but the closed ends require enough internal room for your studs; the locks use their own key.

Project Kics Kyokugen — Best for a taller, capped look with matching nut profiles

Choose Kyokugen if you prefer a taller closed-end appearance and the same seven-sided profile on every nut. The 42 mm nuts require the supplied heptagon adapter for every wheel nut; this is not a separate locking-nut system, and the closed ends still need adequate internal stud clearance.

All three require M12 × 1.5 right-hand studs, matching aftermarket 60° conical wheel seats, adequate thread engagement and room for the nuts and their tools. Overall nut length is not usable internal stud clearance.

Our Recommendation: Choose RAYS L31 for a compact capped appearance with separate locks, R40 when extended-stud clearance or reduced wheel-seat rubbing matters more, or Kyokugen for a taller capped look if you are comfortable relying on its dedicated adapter. The best choice is the one that clears your actual wheels and studs.

What's Included

• (16) Project Kics Racing Composite R40 standard lug nuts
• (4) Project Kics Racing Composite R40 locking lug nuts
• (1) Standard lug-nut adapter
• (1) Locking-lug key