<p>Numerous spin-forming methods involving cylindrical parts with linear characteristics have been studied to overcome the limitations of mandrel-less spinning for cylindrical parts. In this study, a novel method is proposed for achieving the forming of cylindrical parts with a V-shaped groove. Non-axisymmetric cylindrical parts with a V-shaped groove (angle of 60°, 90°, 120°) are spun via a derived roller path and three roller feeding approach is designed. Three forming schemes are comparatively analyzed in terms of spinning depth, shape accuracy and wall thickness distribution. The results indicate that the forming depth reaches over 84.8% of the theoretical value and the forming angle error is within 7.53%. The wall thinning is more significant for smaller angles: 60° grooves exhibit a maximum thickness reduction of 35%, compared to 16% for 120° grooves. This is attributed to the increased in surface area after deforming, where the smaller angle results in a more pronounced difference in surface area between the deforming zone and pre-deforming zone. Among the schemes, Scheme A presents the most uniform wall thickness distribution, owing to a more rational roller path design, this achieves balanced force distribution and optimized groove metal flow.</p>