
Shimano RT-CL800 Ice Tech FREEZA Rotor with Internal Magnet Lock Ring - 203mm
203mm Shimano RT-CL800 Ice Tech FREEZA Disc Brake rotor with internal magnet lockring
The Shimano RT-CL800LJ is a high-performance 203mm Centre Lock disc brake rotor, an Ultegra/XT-level component. The "LJ" typically denotes the 203mm diameter (L) and an internal lockring with an integrated speed magnet (J) for e-bike/STEPS systems. It features ICE TECHNOLOGIES FREEZA, a three-layer stainless steel/aluminium sandwich construction and radiator fins that significantly reduce heat build up by up to 50'C. This superior heat management ensures consistent, powerful, and quiet braking, minimizing fade and extending pad life.
Features:
-
Premium Heat Management: These rotors, classified at the XT/Ultegra-level, employ an innovative stainless steel/aluminium three-layer sandwich construction to actively manage thermal energy, ensuring consistent and powerful stopping performance throughout your ride.
-
Significant Temperature Reduction: The composite structure, featuring an aluminium core clad between steel layers, facilitates rapid heat dissipation. This design can lower the rotor surface temperature by approximately 50'C.
-
Enhanced System Performance: When paired with Ice-Tech brake pads, this thermal efficiency can drop peak temperatures from around 400'C to 300'C, resulting in dramatic improvements across overall braking function.
-
FREEZA Cooling Fins: The central alloy section is designed to extend beyond the braking track, forming cooling fins that maximize air exposure and enhance the rotor's cooling capacity.
-
Improved Longevity and Quiet Operation: Superior heat dispersion minimizes brake fade and substantially extends the service life of the brake pads, while also contributing to reduced braking noise.
-
Secure Center Lock Design: Utilizing the established Shimano Center Lock mounting system, these rotors are lightweight, rigid, and durable, offering a strong, secure fit with a simple installation process.
-
Optimized Braking Track: The precisely machined braking surface not only promotes effective cooling during intense use but also efficiently clears mud and debris, maintaining performance in adverse conditions.
-
Lightweight, Rigid Support: A large aluminium spider forms a highly rigid and low-weight structure, providing steadfast support for the external rotor ring.
-
High-Performance Finish: The braking surface receives a super-polished treatment, which contributes to exceptionally smooth and reliable stopping power.
-
Comprehensive Sizing and Lockring Options: Available sizes include 203mm, 180mm, 160mm, and 140mm. Lockring styles are offered in internal, external, or internal with an integrated speed magnet to suit various frame types and e-bike applications.
Original: $88.43
-65%$88.43
$30.95Shimano RT-CL800 Ice Tech FREEZA Rotor with Internal Magnet Lock Ring - 203mm
203mm Shimano RT-CL800 Ice Tech FREEZA Disc Brake rotor with internal magnet lockring
The Shimano RT-CL800LJ is a high-performance 203mm Centre Lock disc brake rotor, an Ultegra/XT-level component. The "LJ" typically denotes the 203mm diameter (L) and an internal lockring with an integrated speed magnet (J) for e-bike/STEPS systems. It features ICE TECHNOLOGIES FREEZA, a three-layer stainless steel/aluminium sandwich construction and radiator fins that significantly reduce heat build up by up to 50'C. This superior heat management ensures consistent, powerful, and quiet braking, minimizing fade and extending pad life.
Features:
-
Premium Heat Management: These rotors, classified at the XT/Ultegra-level, employ an innovative stainless steel/aluminium three-layer sandwich construction to actively manage thermal energy, ensuring consistent and powerful stopping performance throughout your ride.
-
Significant Temperature Reduction: The composite structure, featuring an aluminium core clad between steel layers, facilitates rapid heat dissipation. This design can lower the rotor surface temperature by approximately 50'C.
-
Enhanced System Performance: When paired with Ice-Tech brake pads, this thermal efficiency can drop peak temperatures from around 400'C to 300'C, resulting in dramatic improvements across overall braking function.
-
FREEZA Cooling Fins: The central alloy section is designed to extend beyond the braking track, forming cooling fins that maximize air exposure and enhance the rotor's cooling capacity.
-
Improved Longevity and Quiet Operation: Superior heat dispersion minimizes brake fade and substantially extends the service life of the brake pads, while also contributing to reduced braking noise.
-
Secure Center Lock Design: Utilizing the established Shimano Center Lock mounting system, these rotors are lightweight, rigid, and durable, offering a strong, secure fit with a simple installation process.
-
Optimized Braking Track: The precisely machined braking surface not only promotes effective cooling during intense use but also efficiently clears mud and debris, maintaining performance in adverse conditions.
-
Lightweight, Rigid Support: A large aluminium spider forms a highly rigid and low-weight structure, providing steadfast support for the external rotor ring.
-
High-Performance Finish: The braking surface receives a super-polished treatment, which contributes to exceptionally smooth and reliable stopping power.
-
Comprehensive Sizing and Lockring Options: Available sizes include 203mm, 180mm, 160mm, and 140mm. Lockring styles are offered in internal, external, or internal with an integrated speed magnet to suit various frame types and e-bike applications.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
203mm Shimano RT-CL800 Ice Tech FREEZA Disc Brake rotor with internal magnet lockring
The Shimano RT-CL800LJ is a high-performance 203mm Centre Lock disc brake rotor, an Ultegra/XT-level component. The "LJ" typically denotes the 203mm diameter (L) and an internal lockring with an integrated speed magnet (J) for e-bike/STEPS systems. It features ICE TECHNOLOGIES FREEZA, a three-layer stainless steel/aluminium sandwich construction and radiator fins that significantly reduce heat build up by up to 50'C. This superior heat management ensures consistent, powerful, and quiet braking, minimizing fade and extending pad life.
Features:
-
Premium Heat Management: These rotors, classified at the XT/Ultegra-level, employ an innovative stainless steel/aluminium three-layer sandwich construction to actively manage thermal energy, ensuring consistent and powerful stopping performance throughout your ride.
-
Significant Temperature Reduction: The composite structure, featuring an aluminium core clad between steel layers, facilitates rapid heat dissipation. This design can lower the rotor surface temperature by approximately 50'C.
-
Enhanced System Performance: When paired with Ice-Tech brake pads, this thermal efficiency can drop peak temperatures from around 400'C to 300'C, resulting in dramatic improvements across overall braking function.
-
FREEZA Cooling Fins: The central alloy section is designed to extend beyond the braking track, forming cooling fins that maximize air exposure and enhance the rotor's cooling capacity.
-
Improved Longevity and Quiet Operation: Superior heat dispersion minimizes brake fade and substantially extends the service life of the brake pads, while also contributing to reduced braking noise.
-
Secure Center Lock Design: Utilizing the established Shimano Center Lock mounting system, these rotors are lightweight, rigid, and durable, offering a strong, secure fit with a simple installation process.
-
Optimized Braking Track: The precisely machined braking surface not only promotes effective cooling during intense use but also efficiently clears mud and debris, maintaining performance in adverse conditions.
-
Lightweight, Rigid Support: A large aluminium spider forms a highly rigid and low-weight structure, providing steadfast support for the external rotor ring.
-
High-Performance Finish: The braking surface receives a super-polished treatment, which contributes to exceptionally smooth and reliable stopping power.
-
Comprehensive Sizing and Lockring Options: Available sizes include 203mm, 180mm, 160mm, and 140mm. Lockring styles are offered in internal, external, or internal with an integrated speed magnet to suit various frame types and e-bike applications.











