Note: See 526596 4" disc adapter to allow installation of 4" diffuser discs on 526594 3" baffle

Fits: > 59-81 XL

Offers data recording: * Total engines hours run time

Flathead & OHV models

Dynojet Thunderslide Kit Evo 89-99 CV Tändning och batteri Note: See 526596 4" discDescription For EU models; Stage 1. The Thunderslide for Harley Davidson has set a benchmark in jet kit design. It incorporates a custom made throttle slide of which the unique profile allows precise control over the slide's range of movement. It creates a stronger signal, improving fuel atomizing which is essential for a good fuel burn. This provides more power, increased throttle response and improved fuel economy. Fitment 89 99 Evo Big Twin