The finishing touch that looks good with any shift knob
Gone are the days of sagging shift boots, broken plastic shift boot collars, and shift boot collars that don't match the diameter or style of your shift knob. ACUITY designed this Shift Boot Collar Upgrade to allow use of virtually any M10x1.5 shift knob in your Honda without sacrificing fit and finish between the shift boot and shift knob. This kit includes 2 binding nuts, one meant for flat-bottomed knobs, and the other meant for boss-bottomed knobs (like modern Civic Type R and Honda Factory Performance designs). The boot collar is reversible and can be flipped to match your knob's base diameter, whether it be a traditional narrow-bottomed knob or the newer style wide-bottomed knobs. An integral retaining feature lets you easily pop the boot collar on and off many times without problems, so you no longer have to worry about breaking the OEM plastic boot ring when removing your shift knob. The supplied binding nuts are turned and milled from stainless steel and have flats for a 12mm open-ended wrench. The boot collar is made from 300 series stainless steel and is all markings are laser etched.
- 1999-2009 Honda S2000 (all mt)
- 2002-2005 ACURA RSX-S
- 2002-2005 ACURA RSX (all mt)
- 2002-2006 Honda Integra-R
- 2006-2011 Honda Civic Si
- 2006-2011 Honda Civic (all mt)
- 2009-2014 Honda Fit (all mt)
- 2015+ Honda Fit (all mt)
- 2012-2015 Honda Civic Si
- 2012-2015 Honda Civic (all mt)
- 2014+ Honda Fit (all mt)
- 2015-2017 Honda Civic Type R
- 2016+ Honda Civic (all mt)
- 2017+ Honda Civic Si
- 2018+ Honda Civic Type R
- 2018+ Honda Accord (all mt)
1x Turned Stainless Shift Boot Collar (part # 1924-04)
1x Flat-Bottomed Knob Binding Nut (part # 1924-03)
1x Boss-Bottomed Knob Binding Nut (part # 1924-01)
4x Small Cable Ties
Note about shift boots and Cable Ties:
On some shift boots, the supplied zip ties may not reach around the whole boot. Avoid using a larger cable tie as it will not fit into the groove on the boot collar as well. Instead, use 2 of the supplied cable ties attached together to reach around the whole shift boot. The supplied cable ties are quite narrow and are selected to fit into the boot collar. If you need more cable ties, similar cable ties can be purchased (normally in black though) from most hardware stores near you.
Video Install Guide (shown on a 10th Gen Civic Si):
(for a PDF Guide specific to your vehicle,, visit acuityinstruments.com/install )
bought my self a 6spd aluminum mugen shift knob and the acuity boot collar matches perfectly with it and it looks so much clear the the stock si boot collar
This completes my shifter set up, tidied everything up giving it a clean look!
Please note that all shipments ship the business day (mon-fri, except on holidays) after they are received.
Next-Day Shipping Policy:
Shipments are sent only after payment has been received. ACUITY Instruments LLC reserves the right to delay shipments temporarily if credit card fraud is suspected. ACUITY Instruments LLC ships all orders on the next business day. This means that if you purchase the "next day" shipping option, next day shipping will go out the next day, meaning a total transit time of 2-days. Similarly, 2-day shipping takes 3 days since the order is filled the next day. If you require faster shipping, we recommend you contact one of our vendors that carries inventory.
Everyone loves lots of shipping options! We offer USPS First Class, Priority, and Priority Express for shipments to most countries and states. We also offer UPS Ground, 2-Day, and other options for most US states and territories. Please remember, all orders ship the day after they are placed.
Shipping Insurance and Signature Policy:
Acuity insures all packages it ships. This insurance covers damage to or loss of the product while in transit only. This does not cover theft of the package after delivery. Because of this, a signature is required for delivery of all orders over $100 (before shipping costs). If you will not be available to receive the shipment, many carriers permit the recipient to leave a note on the door instructing them to leave the package. If you choose to do this, please remember that Acuity Instruments LLC cannot insure packages that are stolen.
Free Shipping Options:
Occasionally we offer shipping specials where orders over a certain amount are free. If we are offering this, you will see the free shipping option in your cart at checkout. If no options is visible at checkout, then either there is currently no free shipping offer or you are not in a zone that qualifies for free shipping. Most states in the continental USA qualify when a shipping special is being ordered. There is no choice of carrier for free shipping, but typically we will ship your order will likely ship using either USPS or UPS. If you'd like a faster delivery, you can opt out of the Free Shipping option in favor of a faster, paid, shipping option.
Taxes on International Shipments:
It is against Acuity's policy to falsify tax documents during the shipment of goods to locations outside of the USA. The tax documents for your shipment will reflect the price you paid for the parts. Please do not contact us requesting us to falsify tax documents so that you do not have to pay taxes on the shipment as we cannot do this.
Guaranteed Times by Carriers and Related Reimbursements:
On some shipping services, like USPS Priority Express, the service provider (USPS, UPS, DHL etc) will offer a shipping reimbursement if the order does not arrive on time. ACUITY does not assume responsibility for tracking these matters. If you suspect your service may have a delivery-time guarantee and was delivered late, please contact us with the order # and delivery info. Please note that a full refund is typically not provided by the carrier. ACUITY does not offer full reimbursement of shipping costs, but ACUITY will pass on 100% of any reimbursement for shipping costs from the carrier to the customer.
Domestic Transit Times:
For orders shipping within the continental USA, USPS First Class shipments will usually take around 5-7 business days for delivery. USPS Priority usually takes closer to 2-4 business days, and Priority Express usually takes about 2 business days. Your exact transit time will vary based on your location.
International Transit Times:
USPS First Class International shipping is very economical, but the transit time can be very slow. Please allow up to 4 weeks for delivery of orders shipped via USPS First Class International. USPS Priority mail is typically faster, normally taking closer to 2 weeks. USPS GXG is faster still, typically taking only about 1 week. Your exact transit times will vary depending on your location, and it is possible that your exact transit time will exceed the values provided here. We also offer UPS international shipping options for many countries.