Lima Slack-R Kit 1.3°

LIMA-IS41

Regular price $99.00 USD
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IS Standard
Head Tube Length (mm)

The 9point8™ Slack-R™ kit changes the head tube angle on bikes with IS headsets. (IS41 and IS42* upper bearing and IS52 lower bearing only.)

Confirm the three checks below and complete the drop down menus to see what Slack-R kits are available for you.

1. Confirm your headset is the IS Standard
If you are not sure, read this article on headset identification by the experts at Park Tools.

 2. Confirm you have enough steer tube length to install a Slack-R
If measurements A + B are greater than below there is enough steer tube to install a Slack-R

3. Measure or look-up your bike's head tube length (HTL)
Bicycle manufacturers often list your bike's HTL in geometry charts on their websites. You can also measure this yourself as shown below.

 

What does installing a Slack-R do to your bikes geometry?
Click HERE to take a deeper look.

Want more customization?
Add additional parts to your Slack-R Kit to fine tune your HTA and test the extremes. Individual parts located HERE.

**Important Compatibility Information**
**MUST READ**
Slack-R is now compatible with MOST Tapered IS headsets. There are 3 different styles of upper cups now to go along with the IS52 lowers. IS41, IS42, and IS42S.

IS41/IS52 will fit a number of bikes from manufacturers such as Yeti, Santa Cruz, and Trek (eliminates the need for a Knock Block in most cases). Cube is an exception as they use a deeper upper bearing seat and the Slack-R IS41 will not sit properly in the Cube frames.

IS42/IS52 will fit many bikes from Cannondale, Norco, Marin, Orbea, GT, Revel, Scott and many more including some Specialized with a standard depth IS42/IS52 headset. Standard bearing seat depth is 3mm

IS42S/IS52 will fit Specialized bikes that have the 6.8mm deep upper bearing seat. (some Specialized bearings sit deeper than the standard IS42 geometry so they require their own specific top cup to insure proper fitment)

Headset types do vary across the same manufacturer, make sure you are sure what kind of headset you have. (IS/EC/ZS or hybrids of these)

Some IS bearing seats in the frames have a smaller bearing seat inside diameter than others so in some cases a bit of sanding will be required to fit in the 34.5mm upper sleeve and 44.5mm lower sleeve. In most cases the frame allow the kits to drop right in but in some cases opening up the upper and/or lower bearing seat inside diameter(s) will be required so double check your frame clearance prior to ordering if unsure.

Contact support@9point8.ca if you are unsure about your application prior to ordering.

Does your bike have a Trek Knock Block headset?
The Stop Chip must be removed from all Trek Knock Block headsets before installing a Slack-R. Read more here.

Kit HT Length Upper Cup Min L Max L Lower Cup Min L Max L Tensioner L
ALPHA 90-98 0000-1343 22 26 0000-1349 25 29 0000-1345 43
BRAVO 100-108 0000-1343 22 26 0000-1349 25 29 0000-1346 53
CHARLIE 110-118 0000-1343 22 26 0000-1349 25 29 0000-1347 63
DELTA 120-128 0000-1343 22 26 0000-1349 25 29 0000-1348 73
ECHO 97-105 0000-1343 22 26 0000-1350 32 36 0000-1345 43
FOXTROT 107-115 0000-1343 22 26 0000-1350 32 36 0000-1346 53
GOLF 117-125 0000-1343 22 26 0000-1350 32 36 0000-1347 63
HOTEL 127-135 0000-1343 22 26 0000-1350 32 36 0000-1348 73
INDIA 110-118 0000-1344 42 46 0000-1349 25 29 0000-1345 43
JULIET 120-128 0000-1344 42 46 0000-1349 25 29 0000-1346 53
KILO 130-138 0000-1344 42 46 0000-1349 25 29 0000-1347 63
LIMA 140-148 0000-1344 42 46 0000-1349 25 29 0000-1348 73
MIKE 117-125 0000-1344 42 46 0000-1350 32 36 0000-1345 43
NOVEMBER 127-135 0000-1344 42 46 0000-1350 32 36 0000-1346 53
OSCAR 137-145 0000-1344 42 46 0000-1350 32 36 0000-1347 63
PAPA 147-155 0000-1344 42 46 0000-1350 32 36 0000-1348 73

Click on the image, or click here to download the Slack-R Instructions PDF

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