Galfer Brake Upgrade Guide for Electric Dirt Bikes — Sur-Ron, Talaria, KTM, Stark

Which Galfer brake pads and rotors fit your electric dirt bike? Complete fitment guide covering Sur-Ron Light Bee X, Talaria Sting, Ultra Bee, KTM Freeride E-XC, and Stark Varg with part numbers and prices.

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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) — $40.99 — 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) — $43.99 — 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) — $63.99 — 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) — $76.99 + +20mm Adapter (SB002) — $39.99 — 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. Total upgrade cost: $116.98.

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:

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) — $41.99. 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) — $44.99

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) — $106.99 — 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:

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.

Frequently Asked Questions

Do Galfer brake pads fit the Sur-Ron Light Bee X?

Yes. The Sur-Ron Light Bee X uses a Tektro Auriga hydraulic caliper. Galfer makes two compounds for this caliper: the E-Bike compound (BFD426G1652, $40.99) for trail and general riding, and the Pro sintered compound (BFD426G1554, $43.99) for aggressive trail or track use. Both are direct drop-in replacements — no hardware changes needed.

Do Galfer brake pads fit the Talaria Sting?

Yes. The Talaria Sting MX3, MX4, and XXX all use a Tektro Auriga caliper — the same caliper family as the Sur-Ron Light Bee X. The Galfer E-Bike (BFD426G1652) and Pro (BFD426G1554) pads are verified direct fits. The Talaria Sting MX4 Expert uses a Magura MT5 caliper; this requires a different Galfer pad (BFD487G1652, $41.99).

What is the difference between Galfer E-Bike and Galfer Pro brake pads?

Galfer E-Bike compound is an organic/semi-metallic formulation designed for heavier, higher-powered electric bikes. It provides good initial bite, consistent feel as the pads warm up, and longer service life in mixed conditions. Galfer Pro compound is fully sintered metal — better heat resistance under repeated hard stops and in mud or wet conditions, but harder on rotors and requires a longer bedding period. For trail riding, E-Bike compound is the right choice. For track, aggressive enduro, or wet terrain, go Pro.

What size Galfer wave rotor fits the Sur-Ron Light Bee X front?

Two Galfer wave rotor options fit the Sur-Ron Light Bee X front: the 203mm DB034W ($63.99), which is a drop-in replacement for the OEM rotor, and the 223mm DB007W ($76.99), which requires a +20mm post mount caliper adapter (SB002, $39.99). The 223mm upgrade provides more lever leverage and better heat dissipation. The adapter bolts directly to the OEM caliper mount.

Do Galfer brakes fit the KTM Freeride E-XC?

Partially. The KTM Freeride E-XC uses BRAKTEC hydraulic disc brakes — not Tektro Auriga, not Magura. Galfer does not currently make a BRAKTEC-specific pad compound; use OEM BRAKTEC pads for the calipers. For the rotor, Galfer makes a 260mm wave rotor (DF796W, $106.99) for the Freeride E-XC front — verified fitment for 2015–2023 models. Brake fluid is DOT 4 — do not use mineral oil in BRAKTEC brakes.

Do Galfer brakes fit the Stark Varg?

Yes. The Stark Varg uses Brembo disc brakes — Galfer makes a Sintered HH (Double-H) compound pad ($39.99) verified for the Varg MX 1.0, EX, SM, and MX 1.2. For the rotor, Galfer makes a 260mm wave rotor for the front ($149.99) and a 220mm wave rotor for the rear ($122.99). Note: the Stark uses DOT 5.1 brake fluid — do not use DOT 4 or mineral oil.

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