RISK Bicycle Oil Disc Bleed Nipple Cover Dust Plug Screw Cap Rubber Plug DA Protective Cover 105UT For R7170/R8170/R9270
Product Brand: RISK
Article number:
SKU1:RA156 Highway oil disc [greasing nozzle] dust plug
SKU2:RA157 Highway oil disc [oil filling screw] dust plug
Compatibility:
Designed for road disc brake systems including models R7170, R8170 and R9270.
Descriptions
RISK RA156 / RA157 Road Bike Hydraulic Disc Brake Dust Plugs
The RISK RA156 / RA157 Hydraulic Disc Brake Dust Plugs are small but useful replacement parts for road bike hydraulic disc brake calipers. Made from flexible silicone, these plugs help cover and protect the brake caliper bleed port, bleed nipple, or bleed screw area from dust, dirt, water, and road debris.
Two versions are available:
- RA156 – designed for the brake caliper bleed nipple / oil injection nozzle
- RA157 – designed for the bleed screw / oil screw position
Each pack includes 4 dust plugs, making it a convenient spare set for road bike maintenance. The plugs are lightweight, compact, and suitable for riders who want to keep their brake calipers clean and protected.
They are suitable for selected road hydraulic disc brake systems, including Shimano 105 / Ultegra / Dura-Ace series, such as R7170, R8170, and R9270.
Note: Please check the plug dimensions and your brake caliper structure before purchase.
4. Key Features
- Designed for Road Hydraulic Disc Brakes
Helps protect the bleed port or bleed screw area on road bike hydraulic brake calipers. - Two Types Available
RA156 for bleed nipple / oil injection nozzle.
RA157 for bleed screw / oil screw. - Flexible Silicone Material
Soft, lightweight, durable, and easy to install or remove. - Dust and Moisture Protection
Helps reduce dust, mud, water, and road debris from entering the brake service area. - Lightweight Design
Approx. 0.6–0.7g per 4 pieces, almost no added weight. - 4PCS Per Pack
Convenient replacement or spare parts for bike maintenance. - Clean Brake Caliper Appearance
Gives your hydraulic disc brake caliper a neat and finished look. - Suitable for Selected Shimano Road Brake Calipers
Compatible with selected Shimano road hydraulic disc brakes, including R7170 / R8170 / R9270 series.
5. Specifications
| Item | RA156 |
|---|---|
| Brand | RISK |
| Model | RA156 |
| Product Name | Bleed Nipple Dust Plug |
| Material | Silicone |
| Color | Black |
| Top Diameter | Approx. 9mm |
| Plug Diameter | Approx. 5.5mm |
| Height | Approx. 4.4mm |
| Net Weight | Approx. 0.6g / 4pcs |
| Package Weight | Approx. 2g |
| Package Size | Approx. 10 x 8 x 1cm |
| Quantity | 4pcs / pack |
| Item | RA157 |
|---|---|
| Brand | RISK |
| Model | RA157 |
| Product Name | Bleed Screw Dust Plug |
| Material | Silicone |
| Color | Black |
| Top Diameter | Approx. 8mm |
| Plug Diameter | Approx. 3.5mm |
| Height | Approx. 4.8mm |
| Net Weight | Approx. 0.7g / 4pcs |
| Package Weight | Approx. 2g |
| Package Size | Approx. 10 x 8 x 1cm |
| Quantity | 4pcs / pack |
6. Package Includes
RA156 Package
- 4 × RA156 Bleed Nipple Dust Plugs
RA157 Package
- 4 × RA157 Bleed Screw Dust Plugs
Package only includes the dust plugs. Brake caliper and other parts shown in images are not included.
