Same-day shipping cutoff: Noon Pacific Time

Spring time is in full swing here at ProCycle.  With these busy days please be sure to let us know if your order is time sensitive.  We try to do as much as we can to accommodate your upcoming trip.  

Fuel and Intake

Carburetors, Jet Kits, Air Filters, Fuel Filters, EFI Control Modules

Basic Carburetors Tech Talk: https://youtu.be/KGR6-RsXVKg

Geared for the do-it-yourselfer that already has a TM40 or HS40. This kit supplies everything you need to convert it for use on your bike.

Kit includes intake and air boot adapters, throttle cables, choke knob, accelerator pump nozzle, a wide selection of main and pilot jets plus a TM40 tuning manual.

Choose Bike Model
Add Pocket Tuner Tool
Ships in 1-2 weeks
$169.95
XR650L '93 - '25 DR650 '96 - '25 KLR650 '87 - '18

Replacement socket head (Allen) screws in case you strip out the stock JIS heads on your TM40 bowl. The originals can be stripped out when doing any tuning or carburetor maintenance. Sold in a pack of four, all for the bowl.

Ships same business day
$4.95
DR650 '90 - '25 XR650L '93 - '25

This Kit replaces vital components in the BST40 Carburetor including new a Float, Needle Valve, Gaskets, Seals, Diaphragm, Spring and Float Bowl Screws to return the stock Mikuni BST40 Carburetor to like-new operation. As a bonus we have included Viton o-rings for the float assembly and 4 stainless steel allen screws.

Add Pocket Tuner Tool
Ships in 1-2 business days
$63.95
DR650 '96 - '25 XR650L '93 - '25 KLR650 '87 - '18

Has your TM40 carburetor been sitting for too long and now needs to be rebuilt? Then what you need is this TM40 Rebuild Kit that contains Genuine Mikuni replacement parts.

This kit includes:

  • Needle Clip and Washer
  • Top Cover Gasket
  • A/P Nozzle O-Ring, Plug and Rubber Cap
  • Fuel Screw O-Ring, Washer and Spring
  • Float Bowl O-Ring
  • Pilot Fuel Screw
  • Drain Plug O-Ring
  • #3.8 Needle Valve Assembly
  • O-Ring for the Starter Circuit and Needle Valve
  • New Screws for the Float Bowl
  • Vent Hose
Add Pocket Tuner Tool
Ships same business day
$39.95
DR650 '96 - '25 XR650L '93 - '25
  • Include top cover gasket, jet needle E-ring and washer, throttle valve seal, pilot air O-ring, fuel joint O-ring, accelerator pump O-ring, needle valve O-ring, needle valve retainer screw, needle valve assembly, float bowl O-ring/gasket, overflow hose, float bowl screws, accelerator pump rod boot
  • Genuine Mikuni parts properly replace worn or mistreated components for the TM42 carburetor
  • Includes all the parts needed to rebuild TM42 carburetor
Ships in 3-5 business days
$44.95
DR650 '96 - '25 XR650L '93 - '25 KLR650 '87 - '18

Softer return spring for your TM40 carburetor.

This replaces the stock return spring that comes with the TM40 carburetor creating a 25% lighter throttle feel.

Ships same business day
$12.95
DR650 '96 - '25 XR650L '93 - '25 KLR650 '87 - '18

Our own jet kit for the Mikuni TM40 carburetor.

Includes new main jets, pilot jets and a new needle with e-clip.

Comes with a printed Mikuni tuning manual and a jetting suggestion chart.

  Not for the stock carburetor Fits TM40 conversions Only

Ships in 3-5 business days
$79.95