Coilover Dampers for the Slowtra - The Taiwanese Part 2 (D2 and K-Sport)

K-Sport and D2 Racing Sport probably source their parts from the same factory. Everything cept the design of the locking collars/spring seats and the colour look the same and are probably the same. Depends on whether you like orange (K-Sport) or purple (D2). Basically only two models are available for the N16/USDM B15 - the regular monotube for street use and the inverted monotube for street/track/tarmac rally use. Majority of the K-Sport and D2 range are probably using these two models but valved differently and of course with different top mounts depending on requirements and usage. There is also another model with external reservoirs but I will not blog any further as this is not avail for the Slowtra. Let's start with the street coilover damper.

The K-Sport Street/Kontrol Pro depending on whether you are in Taiwan or the US and the D2 Street as mentioned above are basically the same monotube damper and feature a 44mm piston in a 50mm diameter damper body.

• Part Number: K-Sport USA (CN5100-GT), K-Sport Taiwan (KS-N011 fo N16 and KS-N010 for USDM B15 Sentra SE-R) and D2 (N011 for N16 and N010 for for USDM B15 Sentra SE-R)
• Damping Adjustable: 36 way single adjustable - compression and rebound combined
• Ride height adjustable: Yes. Independent Ride height adjustable: Yes
• Rebuildable: Yes but I wouldn't bother too much as these coilovers are relatively affordable (~RM2.8K or less)
• Front Spring Rate: K-Sport USA states 7.5 kg/mm, Rear Spring Rate: 6.2 kg/mm. Not stated for K-Sport Taiwan nor D2. I believe you can order spring rates and valving to your specifications.
• Top Mounts: Spherical bearing or pillowballs for the front and aluminium top mount (not sure what bearing or if rubber bush is used) for the rear.
• Other Notable Features: Shock body made from forged aluminium (6061). This means it will probably be lighter than steel bodied shocks but at the expense of strength.
• Price is competitive with BC Racing V1'Design Series at around RM2.8K or less. Shop around. I know D2 is widely available even here in Penang but not so sure about K-Sport.

The next model is the inverted monotube. I believe these are to all intents and purposes the same as the regular monotube in an inverted config. This is known as the K-Sport GTPro or Rally Asphalt depending on whether you are in the US or Taiwan. The D2 is called Rally Asphalt too.

• Part Number: K-Sport USA (CN5100-AR for B15 including SE-R and CN5102-AR for N16), K-Sport Taiwan (not listed on website) and D2 (N011 for N16 and N010 for for USDM B15 Sentra SE-R)
• Damping Adjustable: 36 way single adjustable - compression and rebound combined
• Ride height adjustable: Yes. Independent Ride height adjustable: Yes
• Rebuildable: Yes but you have to try your luck here unless you want to send back to Taiwan or the US.
• Front Spring Rate: K-Sport USA states 9.8 kg/mm, Rear Spring Rate: 8.7 kg/mm. Not stated for K-Sport Taiwan nor D2. Also I believe you can order spring rates and valving to your specifications.
• Top Mounts: Spherical bearing or pillowballs for the front and aluminium top mount (not sure what bearing or if rubber bush is used) for the rear.
• Other Notable Features: Shock body made from forged aluminium (6061). This means it will probably be lighter than steel bodied shocks but at the expense of strength. Price is probably a couple hundred bucks more than the regular monotube but I cannot confirm as I have not checked.

I will wrap up the remaining Taiwanese coilover damper brands such as Silver's, ISC and DGR in my next post. Will then talk about the big boys ie. the very expensive European damper manufacturers/brands.