KYO-EI Kics MONOLITH Inner Cap M12 Blue CMF1U – Resin Cap 20PC Set
Made in Japan
If marked as SPECIAL ORDER ITEM you will need to contact the store and make full payment to have the order placed.
INNER CAP [RESIN CAP]
KYO-EI Kics MONOLITH Inner Cap – Blue
Add a distinctive finishing touch to your KYO-EI MONOLITH wheel nuts with the genuine KYO-EI Kics MONOLITH Inner Cap Set.
The CMF1U resin caps are designed specifically for M12 MONOLITH wheel nuts and install inside the centre of the nut to help cover the exposed wheel stud / hub bolt.
Finished in Blue, these caps provide a striking contrast when fitted to Glorious Black MONOLITH wheel nuts, adding a clean performance-inspired colour accent to your wheels.
PART NUMBER
MONOLITH SIZE
COMPLETE SET
COLOUR
Key Features
- Genuine KYO-EI Kics MONOLITH accessory
- Part Number: CMF1U
- Designed for M12 MONOLITH wheel nuts
- Blue resin construction
- Complete 20-piece set
- Fits inside the centre of the MONOLITH wheel nut
- Helps cover the exposed wheel stud / hub bolt
- Helps reduce exposure of the hub bolt to moisture and corrosion
- Provides a clean, finished appearance
- Creates a bold blue contrast with Glorious Black MONOLITH wheel nuts
Designed for KYO-EI M12 MONOLITH Wheel Nuts
The CMF1U cap is designed to fit inside the internal opening of KYO-EI's M12 MONOLITH wheel nuts. Once installed, the cap helps hide the exposed end of the wheel stud and gives the wheel nut installation a cleaner and more complete appearance.
Blue Accent Finish
The Blue CMF1U cap creates a contrasting centre detail inside the MONOLITH wheel nut.
It works especially well with Glorious Black MONOLITH nuts, giving a distinctive blue accent while retaining the clean and premium MONOLITH appearance.
Helps Protect the Hub Bolt
KYO-EI recommends the MONOLITH Inner Cap for users concerned about corrosion of the vehicle's exposed hub bolts.
By fitting inside the MONOLITH nut, the resin cap helps shield the exposed end of the stud while also improving the finished appearance of the wheel installation.
Specifications
| Specification | Details |
|---|---|
| Manufacturer | KYO-EI Industrial Corporation |
| Product | Kics MONOLITH Inner Cap [Resin Cap] |
| Part Number | CMF1U |
| MONOLITH Nut Size | M12 |
| Colour | Blue |
| Material | Resin |
| Quantity | 20 Caps |
| Maximum Heat Resistance | 100°C |
| Effective Nut Thread Length With Cap Installed | 25mm |
Compatible MONOLITH Nuts
CMF1U is the M12 Blue version of the MONOLITH Inner Cap and is designed specifically for KYO-EI M12 MONOLITH wheel nuts.
Compatible with both M12 thread-pitch versions of the MONOLITH T1/06, including:
- MN01GK – M12 × P1.5 – Glorious Black
- MN03GK – M12 × P1.25 – Glorious Black
Installation
The cap is secured by inserting its retaining tabs into the internal thread grooves of the MONOLITH wheel nut.
Make sure each cap is inserted fully and squarely into the wheel nut. KYO-EI recommends using the dedicated MONOLITH adapter to ensure the cap is properly seated.
The CMF1U is manufactured from resin and has a maximum heat resistance of approximately 100°C. KYO-EI advises removing the caps before racing or other severe high-temperature use.
When the M12 inner cap is installed, the effective thread length of the MONOLITH nut becomes 25mm. Extra care is therefore required on vehicles fitted with long wheel studs.
Do not use an impact wrench with the caps installed, as vibration may cause the caps to loosen or detach.
What's Included
20 × KYO-EI Kics MONOLITH CMF1U Blue Resin Inner Caps
Genuine MONOLITH accessory from KYO-EI Industrial Corporation

