The Shimano Ultegra ST-R8020 brings Ultegra-level performance to hydraulic disc road riding, combining precise 11-speed mechanical shifting with powerful hydraulic disc braking in a single refined lever. Reach adjustment and SERVO WAVE technology make it equally at home on long descents and sprint finishes.

Highlights

  • SERVO WAVE hydraulic action for rapid pad engagement and progressive braking power
  • 11-speed mechanical rear shifting with up to 2-shift upshift from the main lever
  • Reach adjust mechanism for a precise fit regardless of hand size
  • Free stroke adjustment to fine-tune lever feel
  • Shimano mineral oil hydraulic system — no DOT fluid compatibility needed
  • Refined ergonomic bracket shape from the Ultegra R8000 groupset
  • Funnel-bleed compatible for clean, straightforward maintenance
  • Right-hand lever for rear brake and rear derailleur control

SERVO WAVE Hydraulic Braking

SERVO WAVE technology varies the mechanical advantage through the lever stroke. Initial travel brings the pads quickly to the rotor, then braking force multiplies rapidly once contact is made. The result is confident, modulated stopping power in wet or dry conditions without a spongy lever feel.

Precision Shifting Integration

The ST-R8020 uses Shimano's proven cable-actuated shifting mechanism housed within the hydraulic lever body. The internal unit keeps the mechanism protected from the elements while retaining the crisp, tactile shifts that Ultegra is known for. The right lever controls the rear derailleur and supports multi-release upshifting for fast gear changes on climbs or out of corners.

Ergonomics & Adjustability

Shimano refined the R8020 bracket shape and clamp geometry to reduce fatigue on long rides. The adjustable reach lets riders set the lever distance from the bar grip to match their hand size, while the free stroke adjust provides additional fine-tuning of where braking force builds in the lever travel.

Compatibility & Fit

  • Speed: 11-speed road (rear)
  • Compatible rear derailleur: Road 11-speed type (e.g. RD-R8000)
  • Recommended brake caliper: BR-R8070
  • Brake hose: SM-BH90-JK-SSR (straight joint)
  • Hydraulic fluid: Shimano mineral oil
  • Clamp band diameter: 23.8–24.2 mm (standard drop bar)
  • Shift cable: polymer-coated inner cable with OT-SP41 lever-side outer casing
  • Derailleur outer casing: OT-RS900
  • This listing is for the right-hand lever only

Shimano Ultegra components are covered by a 2-year manufacturer's warranty against defects in materials and workmanship from the date of original purchase. Normal wear items (cables, brake pads, seals) are excluded. For warranty support, return the item to Tune Cycles.

  • SERVO WAVE hydraulic disc braking for progressive, modulated stopping power
  • 11-speed mechanical rear shifting integrated into hydraulic lever body
  • Reach adjust mechanism suits a wide range of hand sizes
  • Free stroke adjustment for personalised lever feel
  • Funnel-bleed port for easy hydraulic system maintenance
  • Shimano mineral oil — no DOT fluid compatibility concerns
  • Up to 2-shift upshift from main lever for rapid cadence changes
  • Refined Ultegra R8000 ergonomic bracket shape
  • Clamp band diameter: 23.8–24.2 mm
  • Right-hand lever (rear brake / rear derailleur)
SpecificationDetail
ModelST-R8020-R
SeriesShimano Ultegra R8000
HandRight
Speed11-speed (rear)
Brake systemHydraulic disc
Hydraulic fluidShimano mineral oil
Recommended caliperBR-R8070
Brake hose kitSM-BH90-JK-SSR
Servo WaveYes
Reach adjustYes
Free stroke adjustYes
Max multiple shifts (upshift)2
Clamp band diameter23.8–24.2 mm
Shift cable innerPolymer-coated
Lever-side outer casingOT-SP41
Derailleur outer casingOT-RS900
ColourBlack
SKU SHM-ISTR8020RI
Barcode # 4524667746768
Brand Shimano
Shipping Weight 0.3000kg
Shipping Cubic 0.001000000m3
Unit Of Measure each
Must be installed and serviced by qualified bicycle mechanic

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