Following on from the success of the VF2, CHUMBA is now offering the excellent Cane Creek Double Barrel (CCDB) rear shock as an upgrade over the existing Fox RP23 shock through select dealers and distributors. The VF2 frame, with it’s carbon back end, retails for $1,850. However, for a limited time only, you can upgrade the shock to a CCDB, including a spring matched to your weight, for an extra $200. The cost of the upgrade is the same for the $1,400 XCL frame.
More pictures and CHUMBA’s UK distributor Progressive Bikes explains the reason they feel that the CCDB shock works well with active 4-bar suspensions:
“Given the linear nature of the VF2’s and XCL’s leverage ratio curves relative to other bikes in their class (although technically it is regressive and slightly progressive towards bottom out), the linkage will reflect shock’s tuning very closely. This means, if you tune up the low speed compression to eliminate pedal bob, you will immediately feel this throughout the VF2 linkage’s travel without varying leverage rates the linkage interfering with what you want the shock to.”
So basically the CCDB is a very tunable shock, allowing you to set high and low speed compression and rebound completely independently. CHUMBA feels that this works well with their linkage design because the suspension is very linear over it’s travel, meaning that it doesn’t interfere with the shock tuning. This means that what you set in the CCDB is what you get, over the entire range of the suspension travel. For $200 it sounds like it’s worth a try, especially since the CCDB retails for around $650 normally!
You can get more information at www.chumbaracing.com or contact firstname.lastname@example.org or 714-986-9100 M-F 10am-5pm.