It depends which ones you are looking to use.


There are 3 sizes, from back to front

• Std kit ones
• 25mm spring low profile towers
• 20mm spring low profile towers

The 25mm spring ones allow you to use 25mm springs with the TRF Short, or TRF Mini Big Bore Dampers. You could theoretically use the kit shocks with these towers but you will need to use 20mm springs to get to 5mm ride height. More info here on this link

The 20mm spring towers (Same sort of height as the Raceberry ones). These need 20mm springs to work and you will need the shorter TRF shocks (and I should hope to confirm that the Xray short ones will also work this week). The std 419 shocks will not work with these at all. I hope to do more testing with these this week as I have the X-Ray springs now. A fellow TRF runner has got a set to test with the X-Ray shocks to check they fit fine (He game me the X-Ray shock lengths so it should be fine, but until confirms that this week I cannot guarantee they fit). More info here on this link

The 25m ones work really well. Most of the TRF guys I know are running a set of these now and enjoying the results. The 20mm need more testing, but I think some tracks will be better suited for 25mm springs (not super smooth) and others like competition carpet tracks would be great with 20mm springs. But I am enjoying testing them.

BTW, these towers are all made for non, profit. I literally do not make 1 penny from them. They are aimed for TRF racing community, Feeback is appreciated, but think of it as a collaborative effort, if tweaks etc are needed I will try to do it in my spare time.