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Kartboy
Kartboy 5-Speed Short Shifter and Bushing Combo 2002-2007 WRX
Fabricated right here in the US from CNC'd and TIG welded 4130 chromoly steel, Kartboy's short throw shifter shortens shift travel by 40%. This combo kit also includes the excellent...
Kartboy 5-Speed Short Shifter and Bushing Combo 2008-2014 WRX
Fabricated right here in the US from CNC'd and TIG welded 4130 chromoly steel, Kartboy's short throw shifter shortens shift travel by 40%. This combo kit also includes the excellent...
Kartboy 5-Speed Short Shifter for 2002-2014 Impreza/WRX, 1997-2008 Forester
Fabricated right here in the US from CNC'd and TIG welded 4130 chromoly steel, Kartboy's short throw shifter shortens shift travel by 40%.Simple installation takes about an hour. (Allow a little longer...
Kartboy 6-Speed Short Shifter and Bushing Combo 2004+ STI
Fabricated right here in the US from CNC'd and TIG welded 4130 chromoly steel, Kartboy's short throw shifter shortens shift travel by 40%. This combo (or maybe we should say...
Kartboy Aluminum Shift Knob - 5MT
It's cool, it's inexpensive, and it's made in the good old U.S. of A. The Kartboy shift knob is a DIRECT replacement shift knob -- no goofy adapters to come...
Kartboy Aluminum Shift Knob - 6MT
From the CNC wizards at Kartboy, this shift knob is designed exclusively for your six-speed manual Subaru tranny. (Sorry, automatic owners, it's not for you.) It threads directly on, and...
Kartboy Battery Hold Down
The Kartboy battery hold down wins our prize for "lightest battery hold down." The clean lines contain some serious CNC pocketing that removes a bunch of the inner, non-structural aluminum....
Kartboy Billet Aluminum End Link Combo Pack 2002-2007 WRX Sedan and 2004 STI
Subaru's stock sway bar end links are spindly little things, and are especially overtaxed if you upgrade to larger diameter sway bars. Beef up your roll stiffness with these 6061-T6...
Kartboy Billet Aluminum End Link Combo Pack 2002-2007 WRX Wagon
Subaru's stock sway bar end links are spindly little things, and are especially overtaxed if you upgrade to larger diameter sway bars. Beef up your roll stiffness with these 6061-T6...
Kartboy Billet Aluminum End Link Combo Pack 2004-2008 Forester
Subaru's stock sway bar end links are spindly little things, and are especially overtaxed if you upgrade to larger diameter sway bars. Beef up your roll stiffness with these 6061-T6...
Kartboy Billet Aluminum End Link Combo Pack 2005-2007 STI
Subaru's stock sway bar end links are spindly little things, and are especially overtaxed if you upgrade to larger diameter sway bars. Beef up your roll stiffness with these 6061-T6...
Kartboy Billet Aluminum End Link Combo Pack 2005-2009 Legacy/Outback
Subaru's stock sway bar end links are spindly little things, and are especially overtaxed if you upgrade to larger diameter sway bars. Beef up your roll stiffness with these 6061-T6...
Kartboy Billet Aluminum End Link Combo Pack 2008+ WRX, 2008-2014 STI
Subaru's stock sway bar end links are spindly little things, and are especially overtaxed if you upgrade to larger diameter sway bars. Beef up your roll stiffness with these 6061-T6...
Kartboy Billet Aluminum End Link Combo Pack 2015+ STI
Subaru's stock sway bar end links are spindly little things, and are especially overtaxed if you upgrade to larger diameter sway bars. Beef up your roll stiffness with these 6061-T6...
Kartboy Billet Aluminum End Links, Front 2002-2007 WRX Wagon
The stock rear suspension on the WRX features a hard plastic sway bar link (with rubber bushings) that is quite flexible. Beef up your rear roll stiffness with these 6061-T6...
Kartboy Billet Aluminum End Links, Various Subaru Front Fitments
Beef up your front roll stiffness with these 6061-T6 billet aluminum replacement sway bar end links. They come with polyurethane bushings pre-installed, so installation is a cinch. Fits the following:...
Kartboy Billet Aluminum End Links, Various Subaru Rear Fitments
Beef up your rear roll stiffness with these 6061-T6 billet aluminum replacement sway bar end links. They come with polyurethane bushings pre-installed, so installation is a cinch. Sold in sets...
Kartboy Billet Aluminum Front End Links 2015+STI
Beef up your front roll stiffness with these 6061-T6 billet aluminum replacement sway bar end links. They come with polyurethane bushings pre-installed, so installation is a cinch. Fits all 2015+ STI. ...
Kartboy Billet Aluminum Rear End Links 2002-2007 WRX
The stock rear suspension on the WRX features a hard plastic sway bar link (with rubber bushings) that is quite flexible. Beef up your rear roll stiffness with these 6061-T6...
Kartboy Billet Aluminum Rear End Links 2008-2014 WRX and STI
Beef up your rear roll stiffness with these 6061-T6 billet aluminum replacements. They come with polyurethane bushings pre-installed, so installation is a cinch. Sold as a set of two endlinks. Includes...
Kartboy Billet Aluminum Rear End Links 2009+ Subaru Forester
Beef up your rear roll stiffness with these 6061-T6 billet aluminum replacements. They come with polyurethane bushings pre-installed, so installation is a cinch. Sold as a set of two endlinks. Includes...
Kartboy Billet Aluminum Rear End Links 2015+ Subaru WRX/STI
Beef up your rear roll stiffness with these 6061-T6 billet aluminum replacements. They come with polyurethane bushings pre-installed, so installation is a cinch. Sold as a set of two end...
Kartboy Billet Aluminum Rear End Links BRZ/FR-S
Beef up your rear roll stiffness with these 6061-T6 billet aluminum replacements. They come with polyurethane bushings pre-installed, so installation is a cinch. Sold as a set of two endlinks. Includes...
Kartboy Botox Bolts Rear Subframe Lock Bolts
These bolts are custom-machined from steel and polyurethane. They use existing holes in the rear subframe and unibody to lock the rear subframe together with the unibody. Sure, this adds...
Kartboy Crank Pulley 2002-2014 WRX/Forester/Legacy, 2004+ STI
The Kartboy crank pulley is milled from a shiny block of billet aluminum. Unlike some other manufacturers, Kartboy doesn't make the lightest possible pulley -- although at two pounds, it's...
Kartboy Delrin Knob - 6MT
Kartboy took their familiar "knuckleball" shift knob and machined it out of soft-touch Delrin. Delrin is excellent for not retaining heat, and its smooth-but-grippy finish is a good choice for...
Kartboy Delrin Shift Knob - 5MT
Kartboy took their familiar "flattened light bulb" shape and machined it out of soft-touch Delrin. Delrin is excellent for not retaining heat, and its smooth-but-grippy finish is a good choice...
Kartboy End Link Spacers
These spacers are required when using Kartboy front end links with Whiteline front anti-roll bars. Solid aluminum. Set of four spacers.
Kartboy Exhaust Hangers 2002-2007 WRX/STI
Stock exhaust hangers are made of rubber, which is squishy and floppy. If you have a high-powered WRX with a large-bore exhaust, the stock hangers may not be enough to...
Kartboy Exhaust Hangers 2008-2018 WRX/STI
Stock exhaust hangers are made of rubber, which is squishy and floppy. If you have a high-powered WRX with a large-bore exhaust, the stock hangers may not be enough to...
Kartboy Lightweight Crank Pulley 2013+ BRZ/FR-S, 2015+ WRX
Kartboy's billet aluminum crank pulley reduces rotating mass by almost four pounds! (It's one pound, compared to the stock pulley at 4.9 pounds.) Precision CNC milled from a solid block...
Kartboy Logo
If your Kartboy shift knob logo has worn away, or you just want to change colors, we have extras for you. Sold individually.
Kartboy Oil Cap
The Kartboy oil cap in classic black. Includes a domed emblem, that can be put on once the cap has been installed, to suit your desired alignment. Also includes a...
Kartboy Pitch Mount
It's made of billet aluminum. The polyurethane bushings are bright yellow. The outer coating is hard black super-indestructanium. (Okay, we made up the last part. But it's tough looking, that's...
Kartboy Rear Differential Carrier Bushings 2008-2014 WRX/STI
These bushings replace squishy factory units where the rear differential carrier mounts to the car. Set of four custom harder bushings. Fits all 2008-2014 Impreza/WRX/STI.
Kartboy Rear Differential Outrigger Bushings 2002-2007 WRX /STi
These bushings firm up the rear differential subframe with respect to the chassis of the car, reducing or eliminating the dreaded rear diff thump on hard acceleration. The polyurethane Kartboy...
Kartboy Rear Shifter Bushing Kit
In stock now! This bushing is located at the rear of the shifter stay, and further reduces slop in the shifter mechanism. Fits all manual-transmission late-model Subaru Impreza, WRX, and...
Kartboy Replacement Bushing Kit
Replacement hardware for one end of a Kartboy end link. Two bushing halves, spacer, complete bolt/washers/nut. Works front or rear. NOT for wagon front end links.
Kartboy Shifter Bushings 2002-2014 WRX
The WRX comes with rubber shifter bushings intended to isolate the shifter from engine vibration. While they do accomplish this, they also make the shifting action vague and rubbery.Kartboy bushings...
Kartboy Shifter Bushings 2004+ STi
The STI comes with rubber shifter bushings intended to isolate the shifter from engine vibration. While they do accomplish this, they also make the shifting action vague and rubbery.Kartboy bushings reduce...
Kartboy Shifter Lock 2015+ WRX
The Kartboy shifter lock reduced left-to-right play in the shifter of the 2015+ WRX, to give a tighter shift pattern with less slop. Installation is easy -- we installed one...
Kartboy Short Shifter - Legacy Five Speed 2005-2009
Precision CNC-machined and TIG-welded 4130 chromoly steel, the Kartboy short shifter may be the best bang-for-the-buck mod you will ever make. After all, you use it multiple times, every time...
Kartboy Short Shifter 2015+ WRX
Kartboy's short shifter for the 2015+ WRX was designed to be compatible with ALL stock and aftermarket shifter bearings, levers, and stops, and was carefully engineered for the best "feel."...
Kartboy Stainless Steel Shift Knob - 5MT
It's cool, it's inexpensive, and it's made in the good old U.S. of A. The Kartboy shift knob is a DIRECT replacement shift knob -- no goofy adapters to come...
Kartboy Stainless Steel Shift Knob - 6MT
It's cool, it's inexpensive, and it's made in the good old U.S. of A. The Kartboy shift knob is a DIRECT replacement shift knob -- no goofy adapters to come...
Kartboy STI 6-speed Short Throw Shifter 2004+ STI
Here it is, the Kartboy 6-speed short throw shifter. As always, Kartboy has crafted this shifter from TIG welded 4130 chromoly steel. Shortens throw by approximately 40%. Installation takes a little...
Kartboy Transmission Subframe Bushings 2002-2007 WRX/STI
These bushings sandwich between the transmission mount and the front crossmember. Yes, these bushings support the transmission mount, which itself is a rubber bushing. Only the Subaru engineers understand all...
Kartboy V2 Rear Two-Pot Caliper Adapters 2002-2005 WRX
These CNC-machined steel adapters allow you to bolt the newer-style Subaru two-piston calipers -- either red FHI or gold Brembo -- and corresponding larger rotors to your 2002-2005 Subaru WRX....
Contact Information
| Mach V Motorsports 45690 Elmwood Court, Suite 170 Sterling, Virginia, 20166 (571) 434-8333 |
Hours (Eastern time) M-F 9:30 am - 5:30 pm Sat. 12 noon - 3 pm, usually
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