These forks are of the conventional type (not USD) and an oil change would not be difficult. Standard spec springs are 0.31 kg/mm according to Racetech. I run 0.48's in the kato but am thinking of dropping down to 0.46's 0.31's I dont think could be compensated by oil weight and preload so more than likely a spring upgrade is also needed.
2021 KTM SX 125 pictures, prices, information, and specifications. Gas / Oil Premix Front Adjustable Fork Pre-Load. Yes Using engine speed and throttle position sensor data, the engine management's precise electronic control of the oil pump ensures that the ideal amount of oil for any given conditions is used. With an average fuel-to-oil ratio of 1:80, an oil capacity of about 0.7 liters is sufficient for at least five tanks of fuel. The motorcycle KTM RC 125 of 2020 was industrialized by the company KTM and belongs to the series of Ktm 125 rc that includes motorcycles of different displacements.. This bike corresponds to the category of sporty and the first model of the Ktm 125 rc generation began to be sold to the general public in the year 2019, that's why we talk about a a motorcycle generation that already has 3 years. This tool can install fork oil seals into forks safely and simply, and makes Installing Fork Bushings a simple, quick Job. It fits KTM 47-48mm Fork, KTM 125 EXC/SX/SXS, 150 SX/XC/XCW, KTM 200 XC/XCW,KTM 250 SXS , KTM 990 Adventure R , KTM 990 Adventure S. Fork Seals & Accessoires; Fork tubes & sliders; Clutches. Clutches Clutch Sets; Clutch Springs; Master/slave cyl.rep.sets; Engine & Transmission. Engine & Transmission Engine & Transmission; Starter Motor Motorcycle; Water / Oil Coolers; Filter. Filter Air Filters; O-Rings for Oil Filters; Oil Filters; Power Air Filter; Fuel Pumps. Fuel Pumps