Give Your Part a Name
BK1 - Bike Component
One - 45T SPROCKET upgrade to 8000/9000
BK1-1090
OneUp your Shimano 11 speed drivetrain with the new 45T sprocket for XT/XTR (M8000/M9000) Cassettes. 
 

Only compatible with 11-40T cassettes.
Not compatible with 11-42T.


 The 45T upgrade increases the stock Shimano 11 speed 11-40 cassette range by 12.5%. The 45T provides more total cassette range, it’s not just an easier granny gear. Adding the OneUp 45T sprocket lets you increase your 1x11 front chainring from a 30 to 34T without losing any low range. Eliminate dropped chains forever with our true Narrow Wide chainring design. 

Cassette Zones

The OneUp 45T tunes the cassette progression into two distinct zones optimized for climbing and descending.

Climbing

(21-45T) 13-15% cassette progression. Smaller jumps to maintain an optimum even climbing cadence.

Descending (11-18T) 15-20% cassette progression. Larger jumps to reduce double tap shifting and provide faster burst acceleration when mainly pumping not spinning down trails.



New 2x11 Shimano XT/XTR equipped bikes are spec’d with 11-40 cassettes. As Shimano 11 speed mtb rear derailleurs do not have the capacity needed to run 2x11 with an extended 11-42 cassette.

18T sprocket provides more even cassette progression for smoother cadence and improved shifting
Maintains the 40T as the smallest alloy sprocket for maximum cassette durability
Compatible with M9000/M8000 GS and SGS derailleurs
Compatible with standard freehub driver bodies  
10 upshift points 
Patented (US 9,011,282) other patents pending
  

SPEC

Cassette progression:  11-13-15-18-21-24-27-31-35-40-45

Sprocket material:   7075-T6 Aluminum (45T), Nickel plated hardened steel (18T)

Sprocket weight: 65g more than stock 11-40 cassette

Compatibility: For XT/XTR M8000/M9000 11-40T cassettes. 11 Speed only. Standard freehub driver.

Cassette range improvement:  12.5%

Color: Matched to XTR

 

INSTRUCTIONS

Mount the OneUp 45T first and reinstall all sprockets except the stock 17T and 19T sprockets (these are replaced with our 18T and aluminum spacer). Due to the large pulley wheel offset of the latest 11 speed Shimano rear derailleurs, B-Screw adjustment is well within the normal operating range and chain wrap is excellent throughout the cassette for flawless wide range shifting. The conversion keeps the 40T as the smallest aluminum sprocket for maximum cassette durability.
Photo/Drawing
Vendor Information
http://www.oneupcomponents.com/products/45t-sprocket-18t
$90.00
65
grams
Subparts
Where this part is used
Created on Jan. 30, 2016 at  5:43 PM (EST). Owned by Warner-Admin, Bill.
Bill Warner-Admin
Show fields from Show fields from Show fields from a related table
Report Name *
Description
Reports and Charts Panel
Each table has a panel listing its reports and charts, organized in groups.
Please wait while your new report is saved...
Field label
Column heading override
Justification
What does auto mean?
Fields in:

Fields to Extract:

Name for the new table:
Items in the new table are called:

When you bring additional fields into a conversion, Quickbase often finds inconsistencies. For example, say you're converting your Companies column into its own table. One company, Acme Corporation, has offices in New York, Dallas and Portland. So, when you add the City column to the conversion, Quickbase finds three different locations for Acme. A single value in the column you're converting can only match one value in any additional field. Quickbase needs you to clean up the extra cities before it can create your new table. To do so, you have one of two choices:

  • If you want to create three separate Acme records (Acme-New York, Acme-Dallas and Acme-Portland) click the Conform link at the top of the column.
  • If the dissimilar entries are mistakes (say Acme only has one office in New York and the other locations are data-entry errors) go back into your table and correct the inconsistencies—in this case, changing all locations to New York. Then try the conversion again.

Read more about converting a column into a table.

We're glad you're interested in doing more with Quickbase!

Now we need to make you official before you share apps or manage your account.

Verifying your email lets you share Quickbase with others in your company.

Your work email
Your company