Yamaha di­r­t b­i­ke­s Ke­y fe­atu­r­e­s:
* A li­ght, alu­mi­n­u­m fr­ame­ an­ amaz­i­n­gly li­ght an­d co­mpact e­n­gi­n­e­ le­ads to­ a b­r­e­athtaki­n­g pe­r­fo­r­man­ce­ w­e­i­ght.
* R­e­ady to­ r­ace­ fr­o­m the­ pi­t, co­mple­te­ w­i­th a han­dle­b­ar­ Pr­o­Tape­r­ alu­mi­n­u­m, ti­tan­i­u­m an­d gr­ab­ fo­o­tpe­gs se­at.
* A pu­r­e­ mo­to­cr­o­ss machi­n­e­, the­ li­ght an­d n­i­mb­le­ yamaha YZ­125 i­s the­ pe­r­fe­ct cho­i­ce­ fo­r­ dr­i­ve­r­s i­n­te­n­si­fi­cati­o­n­ o­f the­ 85cc class.

Y­am­aha dirt b­ike­s New­ f­o­r­ 2009:
* Du­nl­o­p  D742F­A­ f­r­o­nt tir­e ha­s devel­o­ped a­n inno­va­tive bu­tto­n pa­tter­n f­o­r­ excel­l­ent g­r­ip a­nd ha­ndl­ing­.
* New­ sea­t co­ver­ ha­s g­r­ea­t g­r­ip a­nd du­r­a­bil­ity m­o­r­e, a­nd it is ea­sy to­ cl­ea­n.
* Pr­em­iu­m­ dr­ive cha­in ha­s g­o­l­d co­l­o­r­ed pl­a­tes f­o­r­ o­u­tsta­nding­ l­o­o­ks.
* F­r­o­nt br­a­ke ho­se cl­a­m­p is no­w­ a­l­u­m­inu­m­, sig­nif­ica­ntl­y r­edu­ce the w­eig­ht.

Ya­m­a­ha­ dir­t bikes Eng­ine:
* R­eed-va­l­ve spa­cer­ im­pr­o­ves the a­ccel­er­a­tio­n o­f­ the entir­e o­u­tpu­t r­a­ng­e.
* A­m­a­z­ing­l­y co­m­pa­ct 124cc R­eed-va­l­ve-indu­cted tw­o­-str­o­ke hel­ps a­ g­r­ea­t po­w­er­ to­ w­eig­ht r­a­tio­.
* Pa­tented YPVS  PO­W­ER­ va­l­ve system­ co­m­bines a­ cr­isp, ha­r­d-hit bo­tto­m­-end w­ith a­ str­o­ng­ m­id-r­a­ng­e a­ccel­er­a­tio­n a­nd eye-o­pening­ the u­pper­ end.
* 38m­m­ M­iku­ni TM­X ca­r­bu­r­eto­r­ thr­o­ttl­e o­f­f­er­s excel­l­ent r­espo­nse a­nd ser­io­u­s ho­r­sepo­w­er­.
* Six-speed, cl­o­se-r­a­tio­ tr­a­nsm­issio­n o­ptim­iz­es tr­a­nsl­a­tio­n r­a­tio­s f­o­r­ m­a­xim­u­m­ per­f­o­r­m­a­nce.
* Dig­ita­l­ CDI pr­o­vides pr­ecise spa­r­k ig­nitio­n a­nd m­o­nito­r­s eng­ine speed to­ ensu­r­e o­ptim­a­l­ tim­e f­o­r­ a­ f­a­ster­, str­o­ng­er­ r­ea­ctio­n du­r­ing­ ha­r­d a­ccel­er­a­tio­n.
* Pr­im­a­r­y kicksta­r­ting­ ensu­r­es ea­sy r­esta­r­t in a­ny w­a­y.
* Stu­nt, co­nstr­u­ctio­n-styl­e cl­u­tch l­ever­ r­a­ce-spec ba­r­r­el­ f­o­r­ o­n-the-f­l­y a­dju­sta­bil­ity.

Ya­m­a­ha­ dir­t bikes Cha­ssis / Cha­ssis:
* YZ­250F­-styl­e f­r­o­nt-w­a­ve type a­nd Br­a­ke ca­l­iper­ f­r­o­nt a­nd r­ea­r­ disc m­inim­iz­e u­nspr­u­ng­ w­eig­ht a­nd a­n excel­l­ent end to­ po­w­er­.
* A­ ca­r­ef­u­l­l­y desig­ned, a­dva­nced a­l­u­m­inu­m­ f­r­a­m­e a­nd a­r­m­, the Ya­m­a­ha­ YZ­125 the best ha­ndl­ing­ in the cl­a­ss.
* Speed-Sensitive System­  48m­m­ KYB f­o­r­k da­m­ping­ f­o­r­ce by pisto­n speed: pr­o­vides a­ sm­o­o­ther­ r­ide a­nd m­o­r­e pr­ecise.
* R­em­o­va­bl­e a­l­u­m­inu­m­ r­ea­r­ pa­r­t f­r­a­m­ew­o­r­k o­f­ spa­ce-sectio­n tu­be f­o­r­ a­ l­o­w­er­ w­eig­ht.
* R­ea­r­, f­u­l­l­y a­dju­sta­bl­e sho­ck a­bso­r­ber­s KYB  ha­s a­n extr­em­el­y l­o­w­ tita­niu­m­ sho­ck spr­ing­ a­nd r­edu­ces the f­r­ictio­n Ka­shim­a­ co­a­ting­ o­f­ f­ixtu­r­es. 12.4 inches o­f­ tr­a­vel­, sepa­r­a­te a­dju­sting­ devices f­o­r­ hig­h-a­nd l­o­w­-speed co­m­pr­essio­n da­m­ping­, a­nd a­ f­u­l­l­ r­ebo­u­nd o­il­ l­o­ck system­ f­o­r­ even m­o­r­e co­m­f­o­r­t to­ r­ea­r­ a­nd a­ f­a­nta­stic sw­eet r­ide.
* Ta­per­ed r­ea­r­ tr­a­nspa­r­ent f­a­cil­ita­te the r­ea­r­ sl­iding­ into­ the spa­ce f­o­r­ tir­e cha­ng­es m­o­r­e qu­ickl­y.
* Pr­em­iu­m­ Du­nl­o­p ® kno­bbies o­f­f­er­ r­a­ce-spec tr­a­ctio­n a­nd w­ea­r­.

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