TVS NB320230 Front Fork Seal Kit (Fork Oil Seal 40×52×10) for Apache RR 310 / RTR 310 & BMW 310R – Genuine USD Fork Oil Seal Set

The TVS NB320230 Kit Front Fork Seal is the genuine OEM fork oil seal kit for the TVS Apache RR 310 and Apache RTR 310, and is widely used as a direct-fit fork oil seal set on the BMW G 310 R thanks to the shared TVS–BMW 310 platform and identical 41 mm USD front forks. The official Apache RR 310 BS6 parts catalogue lists NB320230 as “KIT FRONT FORK SEAL – APACHE RR310”, with internal components including the 40×52×10 fork oil seal, snap ring and fork washer.

The RTR 310 parts manual (Latin America) describes NB320230 as “Kit Retén Suspensión” with guardapolvo (dust seal), fork seal and sealing/bottle washers – confirming it as the official fork seal kit for the 310 platform. Multiple specialist sellers in India clearly advertise “Apache RR 310 / RTR 310 / BMW 310R fork oil seal | TVS – Part no NB320230 – package: 2 seals + washer + clip”, proving real-world compatibility with BMW 310R as well.

Leaking fork seals lead to oil on the fork tube, reduced damping, uneven tyre wear and poor braking stability. Replacing them with a genuine NB320230 kit during fork service restores proper damping, front-end feel and safety. The kit is designed for 41 mm USD forks, using high-grade sealing rubber and correct lip profile to handle Indian heat, dust, potholes and aggressive braking.

Ideal for leak repairs, periodic fork overhauls or pre-emptive maintenance on Apache RR 310 / RTR 310 and BMW 310R bikes.

Key Features

• Genuine TVS OEM kit – officially listed as NB320230 – KIT FRONT FORK SEAL – APACHE RR310 in TVS parts catalogue.

• Correct for 310 USD forks – designed for the 41 mm upside-down front suspension used on Apache RR 310 / RTR 310.

• Includes all critical sealing hardware – multiple sources and kit breakdowns show contents: 2 fork oil seals (40×52×10), 1 snap ring/clip, 1 washer, with some RTR kits also including dust seal and bottle washer.

• BMW G 310 R compatible – several trusted sellers market NB320230 specifically as “Apache RR310 / RTR 310 / BMW 310R fork oil seal | TVS”, confirming cross-platform use on BMW 310R USD forks.

• High-grade sealing material – built to handle fork movement, heat, fork oil and road grime without premature hardening or cracking.

• Prevents fork oil leaks & loss of damping, improving braking stability, front-end grip and tyre wear.

• OEM dimensions (40×52×10) – matches stock fork seal spec used in the RR310 fork oil seal line item (N7100380).

• Direct fitment – no modification or jugaad; fits into the stock fork outer tube with OE snap ring and washer when installed correctly.

• Perfect for complete fork service – ideal to install along with fresh fork oil and inspection of bushes and dust seals.

Compatibility Table

*Years are indicative; always confirm via VIN and visual comparison.

PLEASE CHECK PART NUMBER BEFORE PURCHASE 

Variants

This listing covers one genuine TVS fork seal kit:

• Part Number: NB320230

• Name: Kit Front Fork Seal / Fork Oil Seal Kit

• Position: Front suspension – USD forks

• Kit Contents (typical OE kit):

  • 2 × Fork oil seals 40×52×10 (for both fork legs)

  • 1 × Fork snap ring / retaining clip

  • 1 × Fork sealing washer / bottle washer

  • Some batches/regions also include 2 × dust seals (as per RTR kit listing)

Under The Hood will always ship exactly as shown in our product photos; please check images for exact current kit contents.

FAQs

Q1. Is NB320230 a genuine TVS part or aftermarket fork seal kit?
NB320230 is a genuine TVS OEM part, listed in the official Apache RR310 parts catalogue as “KIT FRONT FORK SEAL – APACHE RR310” and in the RTR 310 parts manual as “Kit Retén Suspensión”. It is also sold by TVS export distributors as an official fork seal kit.

Q2. What exactly do I get in this fork seal kit?
The standard NB320230 kit typically includes 2 fork oil seals (40×52×10), 1 snap ring/clip and 1 washer, sufficient to service both front fork legs on a 310 platform bike. Some catalogues and regional kits also show dust seals and extra sealing washers. Always refer to our “What’s in the box” section and photos for the exact parts we send.

Q3. Will this fit my BMW G 310 R / G 310 GS / G 310 RR?

• BMW G 310 R: ✅ Yes – multiple Indian sellers explicitly market NB320230 as “Apache RR 310 / RTR 310 / BMW 310R fork oil seal | TVS”, and the G310R shares its 41 mm USD fork architecture with the RR310.

• BMW G 310 GS / G 310 RR: ❓ The forks are from the same TVS–BMW family and likely use the same seal size, but we don’t have direct BMW EPC cross-reference for NB320230. Treat as platform-based compatibility and confirm seal dimensions or consult your BMW/TVS service centre before ordering.

Q4. When should I change my fork oil seals?
Change fork seals if you notice:

• Oil streaks on the fork tube or dust seal

• Front suspension becoming bouncy, harsh or diving excessively

• Oil mist on brake caliper or disc

• Visible nicks on the fork tube causing repeated leaks

During replacement, always clean fork tubes and replace/refresh fork oil for best results.

Q5. Do I need one kit or two kits for my bike?
The NB320230 kit is designed to cover both front forks (2 oil seals in one kit). In most cases, one kit = both sides. Only order two kits if you are stocking extra spares or your mechanic specifically recommends additional seals.