Boyesen Power Reed Dualstage Yamaha Tdr125, Tzr125 91-4 Polisport New Upload and the rider's skill level

and the rider's skill level

No further drilling required – perfect fit for your dirt bike

· Gas Gas EC300 2019

HUSQVARNA Year Pitch REAR SPROCKET CR 125 91-13 520 FXRS 60-50  CR 250 92-94 520 FXRS 60-48  CR 250 95-98 520 FXRS 60-48  CR 250 00-13 520 FXRS 60-48  CR 250 90-91 520 FXRS 60-50  CR 250 99 520 FXRS 60-50  TC 250 02-08 520 FXRS 60-50  TC 250 09-12 520 FXRS 60-50  TC 449 11-13 520 FXRS 60-53  TC 450 02-08 520 FXRS 60-50  TC 510 02-08 520 FXRS 60-47  TC 570 01-03 520 FXRS 60-52  TC 610 91-00 520 FXRS 60-52  TE 250 02-08 520 FXRS 60-50  TE 250 09-12 520 FXRS 60-50  TE 310 09-12 520 FXRS 60-50  TE 400 01-02 520 FXRS 60-50  TE 449 11-13 520 FXRS 60-50  TE 450 08-11 520 FXRS 60-47  TE 450 02-08 520 FXRS 60-50  TE 510 02-08 520 FXRS 60-50  TE 511 11-13 520 FXRS 60-51  TE 570 02-04 520 FXRS 60-48  TE 610 91-07 520 FXRS 60-48  WR 125 98-13 520 FXRS 60-50  WR 125 90-97 520 FXRS 60-52  WR 250 98-12 520 FXRS 60-48  WR 300 09-13 520 FXRS 60-48  GAS GAS Year Pitch Part Number EC 125 97-98 520 FXRS 60-52  EC 125 99-17 520 FXRS 60-51  EC 200 99-17 520 FXRS 60-51  EC 250 97-01 520 FXRS 60-47  EC 250 02-17 520 FXRS 60-48  EC 300 99-02 520 FXRS 60-47  EC 300 03-17 520 FXRS 60-51  Beta Year Pitch Part Number RR 450 4T 07-09 520 FXRS 60-52  RR 450 4T 10-12 520 FXRS 60-52

AIRFILTER HONDA CRF150F 03-18

Boyesen Power Reed Dualstage Yamaha Tdr125, Tzr125 91-4 Polisport New Upload and the rider's skill levelOne reed petal is NOT enough! Boyesen's revolutionary dual stage reed design delivers more usable power than stock. Stock single stage reeds operate most effectively within a relatively narrow RPM range and are limited because of the single stage design. Boyesen's one soft reed on top of one firm flow through reed gives you a wide range of intake control, plus increased intake velocity. Your original reeds can't possibly duplicate that performance.