The REVOLUTION PERFORMANCE, LLC Performance Piston Ring Set is engineered for high‑performance street engines with a 107 cc displacement and a 4‑3/8″ stroke length. Designed as a replacement set, it fits pistons with a 3.937″ bore and a domed or flat‑top head shape, supporting a 10.0:1 compression ratio. Each ring is precision‑machined to maintain optimal compression and reduce blow‑by, ensuring consistent power delivery across the entire operating range.
Available in multiple configurations—including 98/107 TC, 113 TC, 124 M8, 128 M8, 4.125 bore, 139/143 M8, and 85/92 EVO—this set offers flexibility for a wide range of engine builds. The modular design allows riders to select the exact ring set that matches their specific bore, stroke, and compression requirements, making it a reliable upgrade for both street‑style and performance applications.