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Honda Jet Kit
Tired of the lag in acceleration? On the dyno and in the field has shown that the new jet kits available increase throttle response, acceleration time. A total of 5% increase in Horse Power. Great Gains on the 500 Rubicon and 650 Rincon.
Available for:
200/250/300/350/400/450.

Can be sold in the power up kit too.
Camshafts
TRX 400 & 450R Stage 1: Excellent mid range and top end power increase. Uses stock valve spring and rockers.Price- TRX 400-$149.95 450R -$159.95

TRA500 & TRX650 Rincon Stage 1: A complete power upgrade on the entire powerband $168.95

TRX 400 & 450R Stage 2: For racing only still uses stock valve springs and rockers.
TRX 400-$149.95 450R -$159.95
Primary Clutch Pullers
Straightline has a full line of primary clutch pullers.
High Compression Pistons
Help the entire range by boosting the compression. Piston comes complete with new rings and piston pin.
Available for:
TRX 400 11.1 $121.68
TRX 250 12.1 $105.84
TRX 300 11.1 $100.80
Honda ATV POWER UP KIT
10-15% Horsepower Increase for you ATV. Improved Throttle response. Comes with a jet kit, K&N filtercharger air filter, outerwears water repellant prefilter, K&N service kit, and complete instructions.
Starting at- $132.95
(all components can be purchesed seperately)
  Big Bore 400EX to 440
This is one of the most popular big bores available. Drastically increases bottom end and midrange, with improved top end. Comes with Cylinder, gaskets, & piston.
Kit Price- $240.30 Price installed- $355.95

*We recommend a power up kit and exhaust to really make your ATV fly!