生产商货号
Shift / Brake Lever 105 ST-R7020 Disc
The Shimano 105 ST-R7025 shift / brake levers are convincing in many ways. If you have a penchant for compact grip ergonomics, you can take advantage of the ST-R7025 levers. The fundamental revision of the shift mechanism helps the dual-control shift / brake levers for even faster and smoother shifting with significantly reduced lever travel. Compared to the predecessor ST-5800 when upshifting by 24% and when downshifting by 8.6%.
Highlights
- Model: ST-R7025
- Application: Road / Cyclocross
- Compatible brakes: BR-R7070
- Lever Type: Dual Control
- Material lever: aluminum
- Handle Width Adjustment: Integrated (with tool)
- Gears: 11 (right) / 2 (left)
- Weight: 275g (manufacturer)
- Color: Black
delivery
- 1x shift / brake lever 105 ST-R7020 Disc
Brake system for front or rear wheel from the 105 groupset
Refined with feedback from pros, the new dual-control lever offers more control and unparalleled ergonomics, including a raised canopy tip and smoother, lighter leverage. The reach adjustment mechanism means the distance between the handlebars and the lever can be adjusted to suit any hand size and riding style. In addition, the braking area has been increased to allow more control when braking.
The all-new hydraulic caliper has 10% more pad clearance than the 105 mechanical brake - that means less brake wear and less noise. In addition, bleeding the brake is easier and more maintenance-friendly.
highlights
- Compact, ergonomic performance - copied from the DURA-ACE
- A raised hood tip improves ergonomics, while a longer grip body provides better hand support
- Custom lever function and adjustable ergonomics
- Find your optimal lever position with easy reach adjustment
- More compact design than its predecessors
- 10% more pad clearance reduces the risk of disc rubbing
- Maintenance-friendly venting process
specification
specification | IR7020DRRDSC100A | IR7020DRRDSC170A |
---|---|---|
area of application | Road | Road |
Type | Shift/brake lever including brake caliper, hydraulic | Shift/brake lever including brake caliper, hydraulic |
Suitable for (mounting lever / brake caliper) | Left, front wheel | Right, rear wheel |
Material shift/brake lever | plastic | plastic |
reach adjustment | Yes | Yes |
clamp | 23.8 - 24.2mm | 23.8 - 24.2mm |
material housing | plastic | plastic |
Drive / switching stages | 2x / 12x | 2x / 12x |
circuit type | Mechanically | Mechanically |
battery / rechargeable battery | 2 x CR1632 | 2 x CR1632 |
Compatible with | Shimano, 12-speed | Shimano, 12-speed |
Material brake caliper | aluminum | aluminum |
Mounting brake caliper | flat mount | flat mount |
Number of brake pistons | 2 | 2 |
Material brake piston | resin | resin |
brake pad | L05 Resin, with cooling fins | L05 Resin, with cooling fins |
brake line | Shimano SM-BH90-JK-SSR | Shimano SM-BH90-JK-SSR |
line length | 1000mm | 1700mm |
line connection | Just | Just |
brake fluid / medium | mineral oil | mineral oil |
Recommended brake discs | Shimano SM-RT70 / SM-RT64 | Shimano SM-RT70 / SM-RT64 |
Technologies used
In this chapter we explain the technologies that the manufacturer uses in this product.
Reach Adjust
The brake lever is equipped with a reach adjustment. This allows the grip to adapt to the size of the driver's hand, his driving style or personal preferences.
DCL - Dual Lever Control
DCL stands for Dual Lever Control. It has braking and shifting functions and allows for easy operation. The improved ergonomics are probably even more important for the high standard than additional gearing. The technology of the new shift lever brings the stability of Shimano's MTB technology and works so precisely and smoothly that it is possible to shift front and rear with just one finger. This is really a highlight of Shimano Total Integration. To understand this, you simply have to experience it yourself.
The dual-control shift/brake levers on the DURA-ACE, ULTEGRA and 105 have been optimized and now feature a weight-reduced joint on the inside of the shifting mechanism, for example, and the shift cable has been integrated for easier steering. The extremely compact and high-precision manufactured individual parts result in an unrivaled switching speed.
ICE Technologies
Fading, which can occur in the brake disc and pad when braking continuously on long descents, impairs braking performance. Shimano has introduced ICE TECHNOLOGIES brake discs and ICE TECHNOLOGIES brake pads to create cooling technology for consistently high braking performance. The brake disc with its 3-layer sandwich structure made of stainless steel, aluminum and stainless steel offers better heat dissipation. The brake pads also have cooling fins. The construction of the disc in connection with the cooling fins results in a longer service life of the pad, less braking noise, less fading and a lower weight.
ONE WAY BLEEDING
ONE WAY BLEEDING was developed to quickly and easily prevent air from being trapped in the hydraulic system. Shimano has optimized the way the brake fluid is routed throughout the system to prevent air bubbles from getting trapped in the system. The one-way mineral oil path, together with the funnel for filling, allows for clean, hassle-free bleeding.
scope of delivery
- 1 x Shimano 105 R7020/R7070 shift/brake lever (see item description for details)
- 1 x shift/brake handle
- 1 * Brake Caliper
- 1 x brake line including connection kit
- 1 x mounting material