The RISK RT039 Titanium M6 × 25 mm Disc Brake Caliper Bolts are lightweight, durable replacement bolts designed for bicycle disc brake caliper mounting and adapter installation. Made from titanium alloy, these bolts provide excellent strength, corrosion resistance and weight savings compared with standard steel bolts.

With an extended M6 × 25 mm specification, the RT039 bolts are suitable for disc brake calipers, brake adapters and compatible mounting positions that require longer M6 bolts. Each bolt features a cylindrical cap head design with a 5 mm hex socket, allowing easy installation with a standard 5 mm Allen key.

Each pack includes 2 titanium bolts in RISK brand packaging. Available in colorful, gold, black and titanium finishes, they are ideal for riders who want both functional performance and a premium custom look for their road bike, mountain bike, gravel bike or e-bike.

Note: Brake caliper and adapter shown in images are for demonstration only and are not included. Please install according to the torque specification recommended by the original component manufacturer.

Key Features

• Titanium Alloy Construction
  Lightweight, strong and corrosion-resistant for long-term bicycle use.
• Extended M6 × 25 mm Size
  Suitable for disc brake caliper mounting, adapter bolts and other compatible M6 fixing positions.
• 5 mm Hex Socket Design
  Easy to install and remove using a standard 5 mm Allen key.
• 2 pcs Per Pack
  Includes two bolts for one common caliper mounting position or compatible installation use.
• Premium Finishes Available
  Choose from colorful, gold, black and titanium colors to match your bike setup.
• Ideal for MTB, Road & Gravel Bikes
  Suitable for mountain bikes, road bikes, gravel bikes and other bicycles using compatible M6 brake bolts.
• Lightweight Upgrade Part
  Approx. 7.1 g per 2 pcs, helping reduce weight compared with standard bolts.
• Brand Packaging
  Packed in RISK retail packaging, suitable for independent brand stores and online sales.

Product Options

Option 1: RT039 M6x25 Titanium Bolts – Colorful

Product Name:
RISK RT039 Titanium M6x25mm Disc Brake Caliper Bolts – Colorful

Short Description:
2-piece titanium M6x25 mm extended disc brake caliper mounting bolt set with colorful oil-slick finish and 5 mm hex socket.

Specifications:

Option 2: RT039 M6x25 Titanium Bolts – Gold

Product Name:
RISK RT039 Titanium M6x25mm Disc Brake Caliper Bolts – Gold

Short Description:
2-piece gold titanium M6x25 mm extended brake caliper bolt set for bicycle disc brake and adapter mounting.

Specifications:

Option 3: RT039 M6x25 Titanium Bolts – Black

Product Name:
RISK RT039 Titanium M6x25mm Disc Brake Caliper Bolts – Black

Short Description:
2-piece black titanium M6x25 mm bicycle disc brake caliper mounting bolt set with 5 mm hex socket.

Specifications:

Option 4: RT039 M6x25 Titanium Bolts – Titanium

Product Name:
RISK RT039 Titanium M6x25mm Disc Brake Caliper Bolts – Titanium

Short Description:
2-piece titanium-color M6x25 mm extended disc brake caliper mounting bolt set for compatible bicycle brake adapters and calipers.

Specifications: