SwissStop Disc 34 RS Disc Brake Pads

The SwissStop Disc 34 RS is the organic (resin) pad our workshop reaches for when a rider says their braking feels vague, noisy, or unpredictable. Swiss-made, quiet, and progressive — it turns a road or gravel disc brake into something you stop thinking about.

Why riders choose it

• Disc RS organic compound. Most stock pads either grab suddenly or need a hard squeeze before anything happens, which makes fast descents tiring and twitchy. The RS compound bites immediately and builds power in proportion to lever pressure, so you can brake later, trail the brakes into a corner, and hold your line instead of scrubbing too much speed.
• Consistently quiet operation. Squealing and howling pads are the single most common complaint with disc road bikes — and they get worse in the wet. The RS is rated 10/10 for noise in both dry and wet conditions, so group rides stay quiet and you stop wincing every time you touch the lever.
• Smooth feel at the lever. Grabby pads pump your hands and forearms on long alpine descents. The RS modulates cleanly, which means less hand fatigue after 20 minutes of continuous braking and more control when you are tired.
• High durability. Cheap resin pads wear out in a few wet weeks. The RS is engineered for a long service life, so you spend less time in the workshop and less money over a season.
• Good heat tolerance for an organic pad. Organic pads are usually the first to fade on long descents. The RS holds its power far better than a standard resin pad, so braking on the tenth hairpin feels like the first.

Performance profile (SwissStop, 0–10)

• Initial bite: 10
• Modulation: 8
• Longevity: 8
• Heat tolerance: 8
• Noise, dry: 10
• Noise, wet: 10

Fitment — Disc 34 shape

Shimano pad types replaced: K03S, K02S, L03A, L02A, L04C, K04S-MX, K04Ti-RX, K05S-RX, K05Ti-RX, L05A-RF.

Shimano calipers: Dura-Ace BR-R9270 / BR-R9170 · Ultegra BR-R8170 / BR-R8070 · 105 BR-R7170 / BR-R7070 · Tiagra BR-4770 · GRX BR-RX820 / BR-RX810 / BR-RX400 · XTR BR-M9200 / BR-M9110 / BR-M9100 · XT BR-M8110 · SLX BR-M7110 · Metrea BR-U5000 · BR-RS805 · BR-RS505 · BR-RS405 · BR-RS305.

TRP: HD-T910. Tektro: HD-R510, HD-R310. REVER: MCX1 Flat Mount.

Not sure which shape you have? Send us a photo of your current pads and we will confirm the fit before you order.

Bedding in (do not skip this)

1. On a gradual descent, drag each brake for 20–30 seconds, alternating front and rear. Repeat 2–3 times.
2. On a steeper slope, drag the brakes for 10–15 seconds, then increase lever pressure until the bike almost stops. Repeat 2–3 times.
3. Pro tip: the front pads run hotter, so swap front and rear and repeat step 2 for the most even result.

Let everything cool completely before changing or swapping pads, and clean the rotors of any contamination when you fit them. If you would rather not do it yourself, our Ljubljana workshop will fit and bed them in for you.

Specifications

• Model: Disc 34
• Compound: Disc RS (organic / resin)
• Part number: P100005052
• EAN: 7640121223297
• Includes: one pair of pads with spring clip
• Made in Switzerland