OneUp Components launches the DH Block
Less is more, Certainly that’s true with some elements of a modern DH bike. If some kid ever asks you “How many gears has it got mate?” you can proudly say “Seven… and it barely cost anything”.
Upgrade your downhill bike to a 7 speed DH specific drivetrain. Shift Less, Whip More.
Get the major benefits of a 7 speed downhill specific groupset for a fraction of the cost. OneUp Components’ DH Block converts a 9,10 or 11 speed mountain cassette into a 6 or 7 speed downhill cassette, with integrated spoke protector and 2 tooth gear jumps through the majority of the cassette. Get faster, more responsive shifting; no more multiple shifts to find the right gear.
Setup
There are 2 different ways to set up a derailleur to take full advantage of the DH Block-equipped cassette. The compatibility chart above indicates which one applies to which derailleur.
Standard Setup
Ensure the high limit screw and cable tension is correct
Turn the low limit screw in until the shifter can no longer shift into the 8th position
Alternate Setup
Untighten the RD cable clamp and completely release all cable tension.
With a chain installed adjust your High limit, so that the upper pulley wheel is directly beneath the smallest sprocket.
You cannot use the Low limit screw to set a Low limit position for your RD. You must rely on the shifter position.
Shift into the 3rd shifter position, wind the barrel adjuster on your shifter fully in (clockwise), then wind it out 2 full turns (anticlockwise). Now tighten the cable clamp on you RD and adjust your cable tension as you would normally.
SRAM: Compatible with X01 DH as a lower cost cassette alternative. Buy a DH Block and a Shimano SLX 11-36T cassette and you have an 11-24T X01DH compatible 7 speed cassette for less than $100!
SHIMANO: Converting a 10 speed Shimano DH groupset to 7 speeds lets you take advantage of the great value ZEE rear derailleur and shifter combo.
SPEC
· 9 speed mountain cassettes convert to 6 speed DH
· 10/11 speed mountain cassettes convert to 7 speed DH.
· 2 tooth jumps through the majority of the cassette with 11-36T base cassette
· 11-25 to 11-21 range depending on base cassette
· Shift through your entire cassette in only 2 shifts
· Weighs just 40g
· $45 USD
· Colours, green or black
