Best current price£84.90from Evans Cycles UK
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Evans Cycles UK£84.90Visit shop Tektro M535 Gemini Sl Disc Brake Medium Black
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The Tektro Gemini SL is a high-performance 4-piston hydraulic disc brake system designed for mountain bike and eBike enthusiasts who demand consistent stopping power and ease of maintenance. This system is perfect for riders upgrading their current setup for improved modulation and durability, though it is specifically optimized for use with 2.3mm thick discs, which may require you to replace your existing rotors for full compatibility.
| Series | Gemini SL |
|---|---|
| Model Part Number | 4717592037029 |
| Brand | Tektro |
No, this system is optimized for 2.3mm thick discs; using thinner rotors may lead to poor performance and excessive piston travel.
The Tektro Gemini SL uses mineral oil. Do not use DOT fluid as it will damage the seals.
Yes, the package includes necessary items such as olives, barbs, and caliper mounting bolts.
Yes, the 1.9m hose can be cut to length to fit your bike frame, though you may need a new olive and barb set for the connection.
You should use the specific 5mm resin pads designed for the Gemini SL to ensure optimal thickness and performance.
The system may have air trapped in the lines; ensure connections are tight and perform a professional hydraulic bleed.
Clean the rotors with isopropyl alcohol and check if the resin pads are contaminated with oil or grease.
Re-center the caliper over the 2.3mm rotor and check for any warping in the disc.
Installation of the Gemini SL is streamlined by the EZ Plug-in system, which allows you to route the hydraulic hose through your frame before connecting it to the lever. Always ensure that your frame and fork mounting points are clean and flush before bolting on the caliper. Since this system is optimized for 2.3mm thick discs, ensure your rotors meet this specification to maintain optimal pad clearance and braking pressure. For maintenance, clean the calipers and rotors with isopropyl alcohol to remove oil residue. If the lever feels spongy, use only official Tektro mineral oil when performing a system bleed.
