



生产商货号
Powerful brake discs for road and off-road use
Shimano's compact and lightweight RT-MT800 brake discs are characterized by particularly fast heat dissipation thanks to the ICE TECHNOLOGIES FREEZA heat management system. The centerlock design makes installing and removing brake discs child's play.
Highlights
- Advanced heat sync design reduces braking performance degradation
- A new design of the brake disc improves heat dissipation and reduces the loss of braking power
- Easy brake disc assembly through toothing and lockring
- Compatible with plastic and metal coverings (narrow design)
specification
specification | I-RTMT800SSI | I-RTMT800SI | I-RTMT800ME | I-RTMT800LE |
---|---|---|---|---|
material | stainless steel | stainless steel | stainless steel | stainless steel |
construction | 2 parts | 2 parts | 2 parts | 2 parts |
Gearing | Internally toothed | Internally toothed | Externally toothed | Externally toothed |
Attachment | Centerlock | Centerlock | Centerlock | Centerlock |
diameter | 140 mm | 160 mm | 180 mm | 203 mm |
Covering thickness | 1.80 mm | 1.80 mm | 1.80 mm | 1.80 mm |
weight | approx. 88 g | approx. 108 g | approx. 132 g | approx. 163 g |
Technologies used
In this chapter we explain the technologies that the manufacturer uses for this product.
ICE-TECH
Fading, which can occur in the brake disc and pad when braking continuously on long descents, impairs braking performance. Shimano introduced ICE TECHNOLOGIES brake discs and ICE TECHNOLOGIES brake pads to create a 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 lower weight.
ICE-TECH FREEZA
ICE TECHNOLOGIES, in combination with the FREEZA brake disc construction, ensures rapid heat dissipation. This leads to a more even braking performance under extreme conditions, extends the service life of the brake lining and reduces the loss of braking force and braking noise.
scope of delivery
- 1 x Shimano RT-MT800 brake disc (see item description for details)
- 1 x lock ring
test verdict
Test result: "Grade 1.9" in the 05/2022 tour (p. 52)
Powerful brake discs for road and off-road use
Shimano's compact and lightweight RT-MT800 brake discs are characterized by particularly fast heat dissipation thanks to the ICE TECHNOLOGIES FREEZA heat management system. The centerlock design makes installing and removing brake discs child's play.
Highlights
- Advanced heat sync design reduces braking performance degradation
- A new design of the brake disc improves heat dissipation and reduces the loss of braking power
- Easy brake disc assembly through toothing and lockring
- Compatible with plastic and metal coverings (narrow design)
specification
specification | I-RTMT800SSI | I-RTMT800SI | I-RTMT800ME | I-RTMT800LE |
---|---|---|---|---|
material | stainless steel | stainless steel | stainless steel | stainless steel |
construction | 2 parts | 2 parts | 2 parts | 2 parts |
Gearing | Internally toothed | Internally toothed | Externally toothed | Externally toothed |
Attachment | Centerlock | Centerlock | Centerlock | Centerlock |
diameter | 140 mm | 160 mm | 180 mm | 203 mm |
Covering thickness | 1.80 mm | 1.80 mm | 1.80 mm | 1.80 mm |
weight | approx. 88 g | approx. 108 g | approx. 132 g | approx. 163 g |
Technologies used
In this chapter we explain the technologies that the manufacturer uses for this product.
ICE-TECH
Fading, which can occur in the brake disc and pad when braking continuously on long descents, impairs braking performance. Shimano introduced ICE TECHNOLOGIES brake discs and ICE TECHNOLOGIES brake pads to create a 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 lower weight.
ICE-TECH FREEZA
ICE TECHNOLOGIES, in combination with the FREEZA brake disc construction, ensures rapid heat dissipation. This leads to a more even braking performance under extreme conditions, extends the service life of the brake lining and reduces the loss of braking force and braking noise.
scope of delivery
- 1 x Shimano RT-MT800 brake disc (see item description for details)
- 1 x lock ring
test verdict
Test result: "Grade 1.9" in the 05/2022 tour (p. 52)
Shimano RT-MT800 brake disc with lockring with external toothing
The redesigned brake discs with ICE TECHNOLOGY FREEZA heat dissipation significantly reduce temperatures, ensuring consistent braking performance and a longer brake pad life. The design, with an aluminum core sandwiched between two stainless steel layers, effectively dissipates heat via the integrated cooling fins.
Highlights
- Stable and versatile braking performance under the toughest conditions
- First-class and consistent braking performance
- New ICE TECHNOLOGIES FREEZA construction for even faster heat dissipation
- 140mm and 160mm optimal for road bike / gravel
- Locking ring type with external serration
Technical specifications
Assembly: |
---|
Center Lock |
Diameter: |
140 mm |
Type: |
2-piece |
Disc material: |
Sandwich composite made of stainless steel outside with aluminum core |
Material Spider: |
aluminum |
Technologies used
Ice-Tech FREEZA
Shimano Ice Technologies ensure rapid heat dissipation from your disc brake. The brake pads are equipped with aluminum cooling fins. The brake disc features a sandwich construction, with stainless steel enclosing an aluminum core. The stainless steel on both sides ensures long-lasting durability, while the aluminum dissipates heat. FREEZA is the advanced brake disc technology, with additional fins in the aluminum of the disc for even better heat dissipation. This cooling technology creates consistently high braking performance and longer brake pad durability, while reducing fading and brake noise.
Scope of delivery
- 1 x Shimano RT-MT800 Center-Lock brake disc including lock ring
Shimano brake disc RT-MT800 Center Lock external toothing
The redesigned brake discs with ICE TECHNOLOGY FREEZA heat dissipation significantly reduce temperatures, ensuring consistent braking performance and a longer brake pad life. The design, with an aluminum core sandwiched between two stainless steel layers, effectively dissipates heat via the integrated cooling fins.
Highlights
- Stable and versatile braking performance under the toughest conditions
- First-class and consistent braking performance
- New ICE TECHNOLOGIES FREEZA construction for even faster heat dissipation
- 140mm and 160mm optimal for road bike / gravel
- Locking ring type with external serration
Technical specifications
Mounting: Center Lock |
---|
Diameter: 160 mm |
Design: 2-part |
Disc material: Sandwich composite made of stainless steel outside with aluminum core |
Spider material: aluminum |
Technologies used
Ice-Tech FREEZA
Shimano Ice Technologies ensure rapid heat dissipation from your disc brake. The brake pads are equipped with aluminum cooling fins. The brake disc features a sandwich construction, with stainless steel enclosing an aluminum core. The stainless steel on both sides ensures long-lasting durability, while the aluminum dissipates heat. FREEZA is the advanced brake disc technology, with additional fins in the aluminum of the disc for even better heat dissipation. This cooling technology creates consistently high braking performance and longer brake pad durability, while reducing fading and brake noise.
Scope of delivery
- 1 x Shimano RT-MT800 Center-Lock brake disc including lock ring



