29-inch aluminium alloy mountain bike frame with disc brake mounts and inner routing

This aluminium alloy mountain bike frame serves as the core structural component for building a custom 29-inch hardtail bicycle. Designed around the popular 29-inch wheel size, it is suitable for trail riding and cross-country use where a larger wheel diameter can improve rollover capability. The frame comes in a black green colour and includes critical features like disc brake mounting points and internal cable routing channels. With specific dimensions provided for the head tube, beam, and rear fork, it offers a clear foundation for selecting compatible forks, seat posts, and other build kit components. Its construction from aluminium alloy aims to provide a rigid platform while managing overall bike weight.

Features and Construction

The frame incorporates several design elements intended for modern mountain bike builds. Its construction and sizing details determine component compatibility and the final riding characteristics of the assembled bicycle.

Material and Build

Manufactured from aluminium alloy, this frame material is commonly chosen for bicycle frames due to its favourable strength-to-weight ratio. The alloy construction contributes to a stiff frame that can efficiently transfer pedalling power while helping to keep the complete bike's weight down. The frame features a traditional hardtail design without rear suspension, focusing on simplicity and direct power transfer. The inclusion of a brake bracket in the package is for mounting a disc brake caliper, indicating the frame's support for contemporary braking systems over older rim brake designs.

Size and Practical Fit

The frame's geometry is defined by several key measurements. The head tube dimensions of 44-55mm by 110mm specify the size needed for the headset and the stack height for the fork's steerer tube. A beam length of 590mm influences the cockpit's reach and the bike's overall wheelbase. The rear fork length of 385mm and the 135mm open gear dropout spacing are critical for ensuring the rear wheel and any gear cassette or disc brake rotor will fit correctly. These precise measurements are essential for builders to verify compatibility with their chosen components.

Uses and Placement

This frame is intended for specific cycling applications and environments. Its design choices align with common practices in mountain biking for both recreational and more dedicated riding.

Event or Professional Use

For riders building a bike for organised cross-country events or regular trail riding, the 29-inch wheel size can offer advantages in maintaining momentum over rough ground. The disc brake mounting is a near-standard requirement for serious off-road use, providing consistent stopping power in wet or muddy conditions where rim brakes may struggle. The rigid aluminium hardtail frame is a typical choice for riders who prioritise pedalling efficiency and low maintenance over the added comfort of full suspension, making it suitable for marathon events or long-distance trail riding.

Everyday Home Use

For the home mechanic or cycling enthusiast, this frame provides a project base for creating a personalised mountain bike. The inner cable routing helps protect gear and brake cables from snagging on brush or during transport, which is a practical benefit for general use. The availability of two riser sizes (410mm and 460mm) allows for some adjustment in handlebar height to suit different rider preferences or torso lengths, aiding in achieving a more comfortable riding position for recreational trail use or fitness riding on forest paths.

Benefits and Buying Value

The value of this product lies in its role as a foundational component. Its design offers specific practical benefits for the end user building or upgrading a bicycle.

Reuse and Low Maintenance

The aluminium alloy material is resistant to rust, which is a key factor for a bicycle frame exposed to the elements. This contributes to the frame's potential longevity with basic care. The inner cable routing not only looks cleaner but also reduces the frequency of cleaning grime from exposed cables and can minimise cable wear from abrasion. As a hardtail design without pivots or rear shock linkages, the frame has fewer moving parts that could wear out or require servicing compared to a full-suspension frame, aligning with a low-maintenance ownership approach.

Why Choose This Product

This frame is a logical choice for someone needing a replacement frame for a damaged 29er or for a builder starting a custom hardtail project from scratch. Its clearly stated dimensions for the head tube, rear spacing, and beam allow for informed component purchasing, reducing the risk of compatibility issues. The inclusion of disc brake mounts and inner routing future-proofs the build, accommodating modern groupsets and maintaining a contemporary look. The provision of a specific brake bracket also removes the need to source this small but crucial part separately.