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home > NK Racing CT125 428 to 420 conversion set (RK製ゴールドシールチェーン& FR スプロケット)   > NK Racing CT125 428 to 420 conversion set (RK製ゴールドシールチェーン& FR スプロケット)  
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NK Racing CT125 428 to 420 conversion set (RK製ゴールドシールチェーン& FR スプロケット)428 to 420 conversion set 125cc428CT125C125GROMWave125420 428420428420 RK 420 KLO 120 120CUT CT125108 420 14 OSAKI 420 39 he 428 size is over spec for 125cc engine capacity. The Super Cub C125, GROM, Wave125, etc., which have the same engine as the CT125 but even higher output, are 420 size. The effect of downsizing from a 428 to a 420 chain is smoother acceleration and deceleration due to weight reduction. Acceleration is better and braking is more
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428 to 420 conversion set
125ccのエンジンキャパシティで428サイズはオーバースペックです。
CT125と同じエンジンで更に高出力のスーパーカブC125やGROM、Wave125等は420サイズです。

428→420チェーンのダウンサイジングの効果は、軽量化による加減速のスムーズ化です。加速良くなって、ブレーキも効くようになります。抵抗も減少するから燃費も向上します。勿論最高速も上がり、シールチェーン化する事によってメンテナンスサイクルの長期化、ノンシールの428よりもシールタイプの420の方が調整のスパンは長くなります。

合わせてスプロケット、前後をセット

シールチェーンゴールド RK 420 KLO -120(クリップ式)
チェーンリンク数が120ですのでCUTが必要です。
(CT125のチェーンリンク数は108)

スプロケット 420-14 OSAKI
スプロケット 420-39

he 428 size is over spec for 125cc engine capacity.
The Super Cub C125, GROM, Wave125, etc., which have the same engine as the CT125 but even higher output, are 420 size.

The effect of downsizing from a 428 to a 420 chain is smoother acceleration and deceleration due to weight reduction. Acceleration is better and braking is more effective. Fuel consumption is also improved due to reduced drag. Of course, the maximum speed is also increased, and the maintenance cycle is lengthened by using a sealed chain.

Sprockets, front and rear, are set to match.

Seal chain gold RK 420 KLO -120 (clip type)
CUT is necessary because the number of chain links is 120.
(CT125 has 108 chain links)

Sprocket 420-14 SCORPION
Sprocket 420-39

NK Racing CT125 428 to 420 conversion set (RK製ゴールドシールチェーン& FR スプロケット)  

Item no : 22202791642
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