













Caliper Spacers to increase height
Upgrade your bike’s disc brake setup with the RISK RT138 Integrated Titanium Alloy Brake Caliper Spacer Kit. Designed for mountain bikes, folding bikes, and small-wheel bicycles, these lightweight spacers help raise and align the disc brake caliper for a cleaner, more precise installation.
Made from titanium alloy, the spacers offer excellent strength, corrosion resistance, and low weight, making them ideal for riders who want both performance and a premium look. The integrated concave-convex design provides stable positioning and reliable support for brake caliper mounting.
Available in Rainbow, Gold, and Black, the RISK RT138 spacers add a stylish finishing touch to your bike while improving brake caliper fitment.
| Item | Details |
|---|---|
| Brand | RISK |
| Model | RT138 |
| Product Type | Disc Brake Caliper Spacer / Height-Raising Washer |
| Material | Titanium Alloy |
| Compatibility | M6 disc brake caliper bolts |
| Outer Diameter | 11mm |
| Inner Diameter | 6.1mm |
| Height / Thickness | 5.2mm |
| Weight | Approx. 3g / 2pcs |
| Package Size | Approx. 90mm × 150mm |
| Package Weight | Approx. 7g |
| Colors | Rainbow, Gold, Black |
| Quantity | 2pcs / pack |
Suitable for most bicycles using M6 disc brake caliper mounting bolts, including:
Please check your brake caliper bolt size and required spacer height before purchase.
Note: This listing includes spacers only. Brake caliper, bolts, rotor, frame, fork, and other parts shown in images are for demonstration purposes only.

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