Ronstan Series 75 Core Block - Stand-Up, Swivel tank - Features a brake tension

- Features a brake tension release system for adjustable control

With proper alignment and lubrication the XPC Seal System has proven successful in Hydroplane race boats running shaft speeds in excess of 6000 RPM for over two seasons

4 cyl 181ci

 Run cables to engine area

Ronstan Series 75 Core Block - Stand-Up, Swivel tank - Features a brake tensionCore Blocks are a true all round solution. A tuned 2 stage bearing system provides excellent performance across the full working load range with an integrated thrust bearing feature and the resilience to handle high dynamic or static loads. Acetal sheave, alloy cheeks and stainless fixings complete the durable package. For reliability and a long service life, these blocks are the right choice for sheets, halyards and control line applications for