Galfer is the most widely-used aftermarket brake brand in the electric dirt bike market — and for good reason. Their pads are formulated specifically for the caliper families found on Sur-Ron, Talaria, Segway, KTM, and Stark bikes, and their wave rotors are a genuine performance upgrade over OEM steel discs. This guide covers fitment by bike, compound selection, and the rotor upgrade path.
Sur-Ron Light Bee X and Light Bee S
The Light Bee X and S both use the Tektro Auriga hydraulic caliper. Two Galfer pad compounds fit directly:
- E-Bike Compound (BFD426G1652) — $42.99 — organic/semi-metallic formulation engineered for heavier e-bikes. Better heat management and wet performance than the stock organic pads. Best for trail and pump track use.
- Pro Sintered Compound (BFD426G1554) — $44.99 — fully sintered metal. Superior performance under repeated hard braking and in mud. Harder on rotors; longer bedding period required. Best for track and aggressive enduro.
Rotor Upgrades for the Light Bee X
Stock front rotor is 203mm. Two Galfer wave rotor options:
- 203mm Wave Rotor (DB034W) — Contact Dealer — direct OEM-size replacement. No adapter needed. The wave (petal) design reduces unsprung weight and improves heat dissipation vs the OEM solid disc. Drop-in upgrade.
- 223mm Wave Rotor (DB007W) — $78.99 + +20mm Adapter (SB002) — Contact Dealer — the performance upgrade. A 20mm larger rotor gives more mechanical leverage at the lever — braking feels sharper and more controllable. The caliper adapter bolts directly to the OEM mount, no machining required.
The 223mm upgrade is the most popular Galfer mod on the Light Bee X. Combined with sintered Pro pads, the front brake character changes noticeably — more initial bite, better modulation under hard use.
Talaria Sting (MX3 / MX4 / XXX)
The Sting MX3, MX4, and XXX use the same Tektro Auriga caliper as the Sur-Ron — the same Galfer pads apply:
- E-Bike Compound (BFD426G1652): $42.99
- Pro Sintered (BFD426G1554): $44.99
- 203mm Wave Rotor (DB034W): Contact Dealer
- 223mm Wave Rotor upgrade: $78.99 + adapter Contact Dealer
Exception — Talaria MX4 Expert: The MX4 Expert uses a Magura MT5 4-piston caliper, not Tektro Auriga. Different pad required: Galfer Magura MT5/MT7 Compound (BFD487G1652) — Contact Dealer. Do not install Tektro-spec pads in a Magura caliper — the piston contact geometry is different.
Sur-Ron Ultra Bee
The Ultra Bee uses a Zoom hydraulic caliper — different from the Tektro Auriga on the Light Bee X. A different Galfer compound is required:
Galfer Semi-Metallic Pads — Ultra Bee (Zoom) — $46.99
Do not install Light Bee X pads (BFD426) in an Ultra Bee caliper — they are not interchangeable.
KTM Freeride E-XC
The Freeride E-XC uses BRAKTEC hydraulic disc brakes — not Tektro, not Magura. Galfer does not currently make a BRAKTEC-specific brake pad; for pads, use OEM BRAKTEC replacements. Galfer does make the rotor:
Galfer 260mm Wave Rotor (DF796W) — $108.99 — verified for KTM Freeride E-XC 2015–2023. OEM-size replacement with the wave design for better heat dissipation.
Brake fluid: DOT 4 only — never use mineral oil in BRAKTEC brakes. Bleed annually.
Stark Varg
The Stark Varg uses Brembo disc brakes — the highest-spec caliper in this catalog. Galfer makes a purpose-built compound:
- Pads: Galfer Sintered Double-H (Brembo) — $41.99 — sintered compound for the Varg's Brembo caliper. Fits MX 1.0, EX, SM, and MX 1.2.
- Front rotor (260mm): $150.99
- Rear rotor (220mm): $124.99
Brake fluid: DOT 5.1 — not DOT 4, not mineral oil. Bleed every 20 race hours.
Compound Selection — Which to Choose?
| Use Case | Recommended | Why |
|---|---|---|
| Trail / pump track | E-Bike Compound | Better wet performance, longer life, more progressive feel |
| Track / aggressive enduro | Pro Sintered | Higher heat tolerance, better fade resistance under repeated stops |
| Mud / wet conditions | Pro Sintered | Sintered metal cuts through mud; organic glazes quickly when wet |
| Race use (Stark Varg) | Sintered Double-H | Only Galfer compound verified for Brembo caliper on the Varg |
Bedding In New Pads
New sintered pads require bedding — 8–10 progressive stops from 25–30 mph before hard braking. Skip this step and the pads won't reach full clamping force for the first several rides. E-Bike compound pads bed in faster and need only 4–5 moderate stops.
Browse the full Galfer brake catalog on Wired Whips — pads and rotors with verified fitment for Sur-Ron, Talaria, KTM, Stark, and Ultra Bee.