INJORA Silicone Rubber Inserts for 118-122mm Tires – 4-Pack (Soft to Hard)

Overview

Enhance the performance of your RC crawler with INJORA silicone rubber inserts designed for 118-122mm tires. This 4-pack brings a range of durometers from ultra-soft to hard, allowing you to tune how your rig engages terrain, absorbs shocks, and preserves tire shape during climbs. Each insert is precision-cut to a compact 110×38 mm footprint and weighs between 69 g and 76 g depending on color, offering a balanced package for versatility without adding unnecessary bulk.

Why choose silicone inserts

Compared to standard foam, silicone inserts deliver a more consistent footprint under load, helping tires maintain a steady contact patch as your crawler encounters rocks, roots, or slippery surfaces. The material is waterproof and temperature resistant, so you can trust performance across damp mornings or sunny sessions without worrying about moisture or heat affecting grip or crown shape.

In practice, these inserts act as a backbone for the tire sidewalls. They flex and stabilize, which can translate into steadier steering, more predictable lines on challenging terrain, and controlled deflection when the rig tires against obstacles. They are a practical option for RC enthusiasts who want nuanced handling rather than a single, rigid setup.

What you get and how to use it

• Yellow insert: ultra-soft, ideal for lightweight crawlers in the 3-5 lb range to maximize grip on soft surfaces.
• Green insert: soft, also suited for lighter rigs, offering a delicate balance between traction and stability.
• Blue insert: medium, tailored for mid-weight crawlers (roughly 6-10 lb) seeking reliable grip with solid support.
• Red insert: hard, designed for heavier crawlers (more than 15 lb) that require steadier handling under load.
• All four inserts share the same 110×38 mm footprint and fit 118-122 mm tires to maintain a consistent feel across setups.

• Material and durability: Made from silica gel silicone, these inserts resist water and heat, helping your tires maintain shape under use.
• Performance edge: Expect improved sidewall support, which helps tires maintain a consistent contact area during climbs and on uneven ground.
• Weight transparency: Each color version has a precise mass (69 g to 76 g), allowing you to tailor weight distribution without guessing.

In summary, INJORA’s 4-pack is a flexible option for optimizing traction, control, and tire geometry across a range of crawler weights. The goal is not a guaranteed outcome, but a practical path to tuning your vehicle for the specific terrains you enjoy—rock gardens, gravel, or muddy trails.

Specifications

• Material: Silicone gel
• Size (inserts): 110×38 mm (4.33×1.5 in)
• Weight per insert: Yellow 69 g, Green 70 g, Blue 73 g, Red 76 g
• Suit For: 118-122 mm tires, 1.9 inch width
• Package: 4 × silicone rubber inserts