Since its implementation in 2001, the Mini Three Links (MTL) has become the most important transportation means for Taiwanese travelling to China. The MTL is connected to recreation/travel in Kinmen: service providers often include short local trips as part of the transit process. This study focuses on the concept of travel-transportation involvement in the MTL, exploring its effects on consumers' travel-transportation dependence, identity, loyalty, price sensitivity, and product purchase intention. Traveltransportation involvement is divided into behavioural involvement and socialpsychological involvement, which in turn considers attraction, self-expression, and centrality to lifestyle. Survey respondents are passengers using the MTL service at Kinmen Shangyi Airport and Shuitou Port. Structural equation modelling is used to analyse the 380 valid questionnaires; results show that different involvement dimensions have unique effects. Behavioural involvement positively affects price sensitivity. Attraction positively affects travel-transportation dependence, which further improves travel -transportation identity. Attraction also has indirect negative effects on loyalty and price sensitivity, which are mediated by its impact on travel-transportation dependence and identity. Further, centrality to lifestyle negatively affects product purchase intention during the travel process. Self-expression has a direct positive effect on travel -transportation dependence and loyalty, but a direct negative effect on price sensitivity. Finally, self-expression has indirect negative effects on loyalty and price sensitivity; the mediation process is identical to that for attraction. This study is valuable in terms of distinguishing between various effects among previously overlooked dimensions of travel -transportation involvement; it also provides practical implications for related travel -transportation-service practitioners and tourism development within Kinmen.